List of Microsoft codenames

Template:Short description Template:Use mdy dates Microsoft codenames are given by Microsoft to products it has in development before these products are given the names by which they appear on store shelves. Many of these products (new versions of Windows in particular) are of major significance to the IT community, and so the terms are often widely used in discussions before the official release. Microsoft usually does not announce a final name until shortly before the product is publicly available. It is not uncommon for Microsoft to reuse codenames a few years after a previous usage has been abandoned.

There has been some suggestion that Microsoft may move towards defining the real name of their upcoming products earlier in the product development lifecycle to avoid needing product codenames.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Operating systems

Windows 3.x and 9x

Codename Edge	Preliminary name Edge	Final name Edge	Notes	Ref
Janus	Template:N/a	Windows & MS-DOS 5	Combined bundle of Windows 3.1 and MS-DOS 5. Janus is a Roman god usually depicted with two faces, here symbolizing the previously separate Windows and MS-DOS products.	<ref>Comes v Microsoft. Transcript of Proceedings, Volume XXXIV Template:Webarchive</ref>
Jastro	Template:N/a	Windows & MS-DOS 6	Combined bundle of Windows 3.1 and MS-DOS 6. Portmanteau of Janus and Astro, the codename of MS-DOS 6.	<ref>Comes v Microsoft. Deposition of Andrew Schulman, Volume 2</ref>
Sparta, Winball	Windows 3.1 Plus	Windows for Workgroups 3.1	Windows 3.1 (16-bit) with enhanced networking; designed to work particularly well as a client with the new Windows NT.	<ref>Template:Cite magazine</ref><ref>Template:Cite journal</ref>
Snowball	Template:N/a	Windows for Workgroups 3.11	An updated version of Windows for Workgroups 3.1, which introduces 32-bit file access and network improvements. It also removes the Standard Mode, effectively dropping support for 16-bit x86 processors.	<ref>Template:Cite journal</ref>
Chicago	Windows 4.0, Windows 93, Windows 94	Windows 95	For codenames of some of the internal components of Windows 95, see "Jaguar", "Cougar", "Panther" and "Stimpy" under Template:Section link	<ref name="Windows 95-related">Template:Cite magazine</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Detroit	Template:N/A	USB Supplement to Windows 95 OSR2	Named after Detroit, Michigan. A writer for Maximum PC suggested that "Detroit" and other Windows 95-era names were answers to the question posed by Microsoft's "Where do you want to go today?" marketing campaign.	citation	CitationClass=web }}</ref>
Nashville	Windows 96	Template:Dropped	Named after Nashville. Cancelled upgrade for Windows 95; sometimes referred to in the press as Windows 96. Codename was reused for Internet Explorer 4.0 and Windows Desktop Update which incorporated many of the technologies planned for Nashville.	<ref>Comes v. Microsoft. Plaintiff's Exhibit 3208 Template:Webarchive: "Desktop Operating Systems Mission Memo". Microsoft Confidential.</ref><ref>Comes v. Microsoft. Plaintiff's Exhibit 5735 Template:Webarchive. Microsoft Confidential (October 25, 1995).</ref>
Memphis	Windows 97	Windows 98	Template:N/A	citation	CitationClass=web }}</ref><ref>United States v. Microsoft Corporation. Government Exhibit 202 Template:Webarchive: "C. Wildfeuer message re 'Memphis IE 4 focus groups report'"</ref>
Millennium	Template:N/a	Windows Me	ME stands for Millennium Edition; Microsoft states that it is pronounced Me.	citation	CitationClass=web }}</ref>

Windows NT family

Codename	Preliminary name	Final name	Notes	Ref
Razzle	NT OS/2, Advanced Windows	Windows NT 3.1	Is also the name of a script that sets up the Windows NT development environment. NT OS/2 reflected the first purpose of Windows NT to serve as the next version of OS/2, before Microsoft and IBM split up. Microsoft used the NT OS/2 code to release Windows NT 3.1.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>Template:Cite magazine</ref><ref>Template:Cite magazine</ref>
Daytona	Template:N/A	Windows NT 3.5	Named after the Daytona International Speedway in Daytona Beach, Florida.	<ref>Template:Cite book</ref>
Cairo	Template:N/A	Template:Dropped	A cancelled project that would have fulfilled Bill Gates' "Information at your fingertips" vision	citation	CitationClass=web }}</ref>
Shell Update Release	Template:N/A	Windows NT 4.0	Template:N/A
Wolfpack	Template:N/A	Microsoft Cluster Server	Template:N/A	citation	CitationClass=web }}</ref>
Janus	Template:N/A	Template:Dropped	Codename for the proposed 64-bit edition of Windows 2000, which was never released.	<ref>Template:Cite magazine</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Impala	Template:N/A	Windows NT 4.0 Embedded	Template:N/A	citation	CitationClass=web }}</ref>
Neptune	Template:N/A	Template:Dropped	Planned to be the first consumer-oriented release of Windows NT succeeding the Windows 9x series; merged with Odyssey to form Whistler.	citation	CitationClass=web }}</ref>
Triton	Template:N/A	Template:Dropped	A cancelled successor to "Neptune".	citation	CitationClass=web }}</ref>
Asteroid	Template:N/A	Windows 2000 Service Pack 1	Template:N/A	citation	CitationClass=web }}</ref>
Odyssey	Template:N/A	Template:Dropped	Planned to be a successor to Windows 2000; merged with Neptune to form Whistler.
Whistler	Windows 2002	Windows XP	Named after Whistler Blackcomb, where design retreats were held.
Mantis	Template:N/A	Windows XP Embedded	Named after the Mantis shrimp.	<ref name="ntexpe" />
Freestyle	Template:N/A	Windows XP Media Center Edition	Template:N/A	<ref>Template:Cite magazine</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Harmony	Template:N/A	Windows XP Media Center Edition 2004	Template:N/A	<ref>Template:Cite magazine</ref>
Symphony	Template:N/A	Windows XP Media Center Edition 2005	Template:N/A	<ref>Template:Cite magazine</ref>
Slalom	Template:N/A	Template:Dropped	Longhorn Media Center Edition. Scrapped in favor of including Windows Media Center in Home Premium and Ultimate editions instead of a dedicated Media Center edition.
Emerald	Template:N/A	Windows XP Media Center Edition 2005 Update Rollup 2	Template:N/A	citation	CitationClass=web }}</ref>
Diamond	Template:N/A	Windows Media Center	Included with Windows Vista.	<ref name="emerald" />
Springboard	Template:N/A	Template:N/A	Set of enhanced security features, included in Windows XP Service Pack 2.	<ref>Template:Cite magazine</ref>
Lonestar	Template:N/A	Windows XP Tablet PC Edition 2005	Template:N/A	citation	CitationClass=web }}</ref>
Whistler Server	Windows 2002 Server, Windows .NET Server, Windows .NET Server 2003	Windows Server 2003	Template:N/A	<ref>Template:Cite magazine</ref><ref>Template:Cite news</ref>
Bobcat	Template:N/A	Windows Small Business Server 2003	Not to be confused with Microsoft Bob.	citation	CitationClass=web }}</ref>
Eiger, Mönch	Template:N/A	Windows Fundamentals for Legacy PCs	Mönch included additional features for use on mobile devices.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Longhorn	Template:N/A	Windows Vista	Named after the Longhorn Bar in the Whistler Blackcomb ski resort; initially planned as a "minor release" between "Whistler" and "Blackcomb" (see below)	<ref>Template:Cite news</ref><ref>Template:Cite news</ref><ref>Template:Cite news</ref>
Blackcomb, Vienna	Template:N/a	Template:Dropped	The purported successor to Whistler, and later, Longhorn. Named after Whistler Blackcomb, where design retreats were held. Blackcomb was later renamed to Vienna in January 2006, named after the capital of Austria. Eventually cancelled due to scope creep and replaced with Windows 7.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Q, Quattro	Template:N/A	Windows Home Server	Template:N/A	<ref>Template:Cite magazine</ref><ref>Template:Cite magazine</ref>
Vail	Template:N/A	Windows Home Server 2011	Template:N/A	<ref>Template:Cite magazine</ref>
Longhorn Server	Template:N/A	Windows Server 2008	Template:N/A	citation	CitationClass=web }}</ref>
Cougar	Template:N/A	Windows Small Business Server 2008	Template:N/A	<ref name="cougarcentro">Template:Cite magazine</ref>
Centro	Template:N/A	Windows Essential Business Server	Named after the Spanish translation of the word "center".	<ref name="cougarcentro" />
Windows 7	Template:N/A	Windows 7	The number 7 comes from incrementing the internal version number of Windows Vista (6.0) by one. Often incorrectly referred to as Blackcomb or Vienna, while the codenames actually refer to an earlier Vista successor project that was cancelled due to scope creep.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Windows Server 7	Template:N/A	Windows Server 2008 R2	Template:N/A
Fiji	Windows Vista Media Center Feature Pack 2008	Windows Media Center TV Pack 2008	Named after the country of Fiji.	citation	CitationClass=web }}</ref>
Cascades	Windows Essential Business Server "v2"	Windows Essential Business Server 2008 R2 (cancelled)	Originally intended as the successor of Windows Essential Business Server 2008 but was cancelled "due to external factors".	citation	CitationClass=web }}</ref>
Aurora	Template:N/A	Windows Small Business Server 2011 Essentials	Template:N/A	citation	CitationClass=web }}</ref>
Quebec	Template:N/A	Windows Embedded Standard 7	Named after the province of Quebec	<ref>Template:Cite news</ref>
Windows 8	Template:N/A	Windows 8	Often incorrectly referred to as Jupiter, Midori and Chidori. Jupiter is the application framework used to create "immersive" apps for Windows 8, and Midori was a separate, managed code operating system. (see below)	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Windows Server "8"	Template:N/A	Windows Server 2012	Template:N/A	citation	CitationClass=web }}</ref>
Blue	Template:N/A	Windows 8.1	Template:N/A	citation	CitationClass=web }}</ref>
Windows Server Blue	Template:N/A	Windows Server 2012 R2	Template:N/A
Threshold	Windows 8.2Template:Citation needed, Windows 9Template:Citation needed	Windows 10 Windows 10 November Update	Named after a location seen in Halo: Combat Evolved, near which Installation 04 orbits.	citation	CitationClass=web }}</ref>
Redstone	Template:N/A	Windows Server 2016 Windows 10 Creators Update Windows 10 Fall Creators Update Windows 10 April 2018 Update Windows Server 2019	Named after a fictional mineral from Minecraft.	citation	CitationClass=web }}</ref><ref name="big Windows update">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Santorini	Windows 10X	Template:Dropped	Named after an island in Greece. Originally supposed to be a new OS to be released mid-late 2021, was eventually cancelled. Some of its features were integrated into Windows 11 and other products.	citation	CitationClass=web }}</ref>
Sun Valley	Template:N/a	Windows 11	Named after Sun Valley, Idaho.	<ref>Template:Cite news</ref><ref>Template:Cite news</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>Template:CitationTemplate:Cbignore</ref>
Hudson Valley	Template:N/A	Template:Unknown	A possibly-planned version of Windows scheduled to be released in 2025. Named after Hudson Valley, New York	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>

Windows platform engineering milestones

The following are code names used for internal development cycle iterations of the Windows core, although they are not necessarily the code names of any of the resulting releases. With some exceptions, the semester designations usually matches the Windows version number.

Codename	Semester	Release	Notes	Ref
Titanium	19H1	Windows 10 May 2019 Update	Named after the chemical element in the periodic table.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Vanadium	19H2	Windows 10 November 2019 Update	Named after the chemical element in the periodic table.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Vibranium	20H1	Windows 10 May 2020 Update Windows 10 October 2020 Update Windows 10 May 2021 Update Windows 10 November 2021 Update Windows 10 2022 Update	Named after the fictional metal Vibranium in Marvel Comics as continuing the previous line of chemical elements with Chromium could have caused confusion with the web browser project.	citation	CitationClass=web }}</ref>
Manganese	20H2	Template:N/ATemplate:Efn	Named after the chemical element in the periodic table.	citation	CitationClass=web }}</ref>
Iron	21H1	Windows Server 2022Template:Efn	Named after the chemical element in the periodic table.	citation	CitationClass=web }}</ref>
Cobalt	21H2	Windows 11	Named after the chemical element in the periodic table.
Nickel	22H2	Windows 11 2022 Update	Named after the chemical element in the periodic table. Originally planned to be the 22H1 semester, although that semester was ultimately skipped and Nickel shifted to 22H2, expanded to span the entire year.	citation	CitationClass=web }}</ref>
Copper	23H1	Template:N/ATemplate:Efn	Named after the chemical element in the periodic table.	citation	CitationClass=web }}</ref>
ZincTemplate:Citation needed	23H2	Windows Server, version 23H2	Named after the chemical element in the periodic table.
Gallium Template:Citation needed	24H1	Template:N/ATemplate:Efn	Named after the chemical element in the periodic table.
Germanium Template:Citation needed	24H2	Windows 11 2024 Update Windows Server 2025	Named after the chemical element in the periodic table.
Dilithium Template:Citation needed	25H1	Template:N/ATemplate:Efn	Named after the fictional material from Star Trek.
Selenium Template:Citation needed	25H2	Template:N/ATemplate:Efn	Named after the chemical element in the periodic table.

Windows CE family

Codename	Preliminary name	Final name	Ref
Pegasus, Alder	Template:N/A	Windows CE 1.0	citation	CitationClass=web }}</ref>
Birch	Template:N/A	Windows CE 2.0	<ref name="boling"/>
Cedar	Template:N/A	Windows CE 3.0	<ref name="boling"/>
Talisker	Windows CE .NET	Windows CE 4.0	<ref name="boling"/>
Jameson	Template:N/A	Windows CE 4.1	<ref name=hall-2006 />
McKendric	Template:N/A	Windows CE 4.2	<ref name=hall-2006 />
Macallan	Template:N/A	Windows CE 5.0	<ref name="boling"/>
Yamazaki	Windows CE 6.0	Windows Embedded CE 6.0	citation	CitationClass=web }}</ref>
Chelan	Windows Embedded CE 7	Windows Embedded Compact 7	citation	CitationClass=web }}</ref>

Windows Mobile

Codename	Preliminary name	Final name	Ref
Rapier	Template:N/A	Pocket PC 2000	citation	CitationClass=web }}</ref>
Merlin	Template:N/A	Pocket PC 2002	<ref name="ChrisDeHerrera1"/>
Ozone	Template:N/A	Windows Mobile 2003	<ref name="ChrisDeHerrera1"/>
Magneto	Template:N/A	Windows Mobile 5	<ref name="ChrisDeHerrera1"/>
Crossbow	Template:N/A	Windows Mobile 6	<ref name="ChrisDeHerrera1"/>
6 on 6	Template:N/A	Windows Mobile 6.1.4	<ref name="ChrisDeHerrera1"/>
Titanium	Template:N/A	Windows Mobile 6.5	<ref name="ChrisDeHerrera1"/>
Maldives	Windows Mobile 7	Windows Phone 7	<ref name="ChrisDeHerrera1"/>

Windows Phone

Codename	Preliminary name	Final name	Ref
Photon	Windows Mobile 7 Series	Windows Phone 7	citation	CitationClass=web }}</ref><ref name="Source for preliminary name">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Mango	Template:N/A	Windows Phone 7.5	citation	CitationClass=web }}</ref><ref name="Codename tracker" />
Apollo	Template:N/A	Windows Phone 8	<ref name="Codename tracker" />
Blue	Template:N/A	Windows Phone 8.1	<ref name="zdnet-threshold" />
Threshold	Template:N/A	Windows 10 Mobile	<ref name=zdnet-threshold />

Others

Codename	Preliminary name	Final name	Notes	Ref
Singularity	Template:N/A	Template:N/A	Experimental operating system based on the Microsoft .NET platform, using software-based type safety as a replacement for hardware-based memory protection. Evolved into Midori.	citation	CitationClass=web }}</ref>
Midori	Template:N/A	Template:N/A	A managed code operating system being developed by Microsoft with joint effort of Microsoft Research.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Red Dog	Windows Cloud	Azure	Microsoft cloud services platform	<ref name="guide for the perplexed" />
Tahiti	Template:N/A	Template:N/A	Supposedly a family of multi-core technologies including an operating system, applications and development tools designed to make better use of today's multi-core CPUs. Midori may be a part of this suite of new Microsoft technologies.	<ref name="Tahiti-manycore">Template:Cite news</ref>
Tokyo	Azure AD Cloud App Discovery	Cloud App Discovery	Azure-based data-directory service designed to help connect the right people to the right data.	citation	CitationClass=web }}</ref>
Zurich	Template:N/A	.NET Services	Part of Microsoft Azure, Microsoft's cloud computing platform, that focuses on extended software development based on .NET Framework to the cloud.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>

OS components

Codename	Preliminary name	Final name	Notes	Ref
Anaheim	Template:N/a	Microsoft Edge	A rewrite of Microsoft's web browser, based on the Chromium project.	citation	CitationClass=web }}</ref>
Barcelona	Template:N/A	Windows Defender Application Guard	A security feature for running the Microsoft Edge web browser inside a virtual machine, thus isolating it from the rest of the system in the event that it was hacked.	citation	CitationClass=web }}</ref>
Beihai		Paint 3D	3D version of Microsoft Paint	citation	CitationClass=web }}</ref>
Code Integrity Rooting	Secure Startup	BitLocker	A security feature that checks and validates the integrity of Windows boot and system components.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Continuum	Tablet Mode	Continuum	A Windows 10 feature that enables hybrid devices to switch between tablet mode and desktop mode. An immediately manifest effect is the Start screen getting maximized in tablet mode.	citation	CitationClass=web }}</ref>
Cornerstone	Secure Startup	BitLocker	Full disk encryption feature introduced in Windows Vista and present in subsequent versions that utilizes the Trusted Platform Module to perform integrity checking prior to operating system startup.	citation	CitationClass=web }}</ref>
Assistant	Template:N/A	Cortana	An intelligent personal assistant included with Windows 10, named after an artificial intelligence character in Halo	citation	CitationClass=web }}</ref>
Cougar	Template:N/A	VMM32	32-bit kernel	<ref name="Windows 95-related" /><ref name="TONT-Cat names 1" /><ref name="TONT-Cat names 2" />
Darwin	Microsoft Installer	Windows Installer	A Windows service and application programming interface for installing software on computers running Microsoft Windows operating systems	citation	CitationClass=web }}</ref>
Frosting	Template:N/A	Microsoft Plus! for Windows 95		<ref>Template:Cite news</ref>
Hydra	Template:N/A	Terminal Services, Windows Terminal Server	Terminal Server adds "multiheading" support to Windows (the ability to run multiple instances of the graphics subsystem), and the hydra is a mythological monster with multiple heads.	citation	CitationClass=web }}</ref>
Jaguar	Template:N/A	Template:N/A	16-bit DOS kernel for Windows 95 based on MS-DOS 5.0, used by Windows 95 boot loader and compatibility layer.	citation	CitationClass=web }}</ref><ref name="TONT-Cat names 2">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Jupiter	Template:N/A	WinRT XAML	A new application framework on Windows 8 used to create cross-platform "immersive" apps.	citation	CitationClass=web }}</ref>
Monad	MSH, Microsoft Shell	Windows PowerShell	"Monads", according to philosopher Gottfried Leibniz's monadology, are the ultimate elements of the universe, individual percipient beings, and MSH is similarly composed of small, individual modules the user puts in interrelation.	<ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Morro	Template:N/A	Microsoft Security Essentials	MSE was codenamed after the Morro de São Paulo beach in Brazil.	<ref>Bott, Ed. "How good is Microsoft's free antivirus software?" Template:Webarchive, ZDnet, June 18, 2009, accessed July 6, 2009.</ref><ref>Schofield, Jack. "Waiting for Morro: Microsoft's free anti-virus software" Template:Webarchive, guardian.co.uk, June 11, 2009, accessed July 6, 2009.</ref>
Neon	Template:N/A	Fluent Design	Microsoft Fluent Design System is a revamp of the Windows UI based around five key components: Light, Depth, Motion, Material, and Scale.	<ref>Microsoft "Fluent Design System" Template:Webarchive, Microsoft, May 11, 2017, accessed May 12, 2017.</ref>
O'Hare	Template:N/A	Internet Explorer 1	Internet Explorer 1, first shipped in Microsoft Plus! for Windows 95: The codename O'Hare ties into the Chicago codename for Windows 95: O'Hare International Airport is the largest airport in the city of Chicago, Illinois — in Microsoft's words, "a point of departure to distant places from Chicago".	citation	CitationClass=web }}</ref>
Panther	Template:N/A	Template:N/A	Cancelled. Panther was a 32-bit kernel based on Windows NT kernel.	<ref name="TONT-Cat names 1" /><ref name="TONT-Cat names 2" />
Pinball	Template:N/A	High Performance File System (HPFS)	"Pinball" is the nickname (as opposed to a codename) for HPFS because HPFS driver in Windows NT 3.5 is called PINBALL.SYS.	citation	CitationClass=web }}</ref><ref>Template:Cite book</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Piton	Template:N/A	ReadyDrive	Feature introduced in Windows Vista to support hybrid drives	citation	CitationClass=web }}</ref><ref name="SFRBRD">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Protogon	Template:N/A	ReFS	The successor of NTFS	citation	CitationClass=web }}</ref>
Rincon	Template:N/A	Internet Explorer 7	Rincon is a surfing beach in Puerto Rico	citation	CitationClass=web }}</ref>
Spartan	Template:N/A	Microsoft Edge [Legacy]	Web browser first introduced in Windows 10, which uses EdgeHTML rendering engine. Refers to Spartans in Halo.	citation	CitationClass=web }}</ref>
Stimpy	Template:N/A	Windows Shell	Applies to Windows 95 only.	<ref name="TONT-Cat names 1" /><ref name="TONT-Cat names 2" />
Viridian	Template:N/A	Hyper-V	Virtualization update for Windows Server 2008	citation	CitationClass=web }}</ref>
WinFS	Template:N/A	Template:N/a	A cancelled data storage and management system project based on relational databases, first demonstrated in 2003 as an advanced storage subsystem for the Microsoft Windows, designed for persistence and management of structured, semi-structured as well as unstructured data.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Cascadia	Template:N/A	Windows Terminal	A terminal emulator for Windows 10.	citation	CitationClass=web }}</ref>

Microsoft Servers

SQL Server family

Codename	Final name	Notes	Ref
SQLNT	SQL Server 4.21		Template:Citation needed
SQL95	SQL Server 6.0		Template:Citation needed
Hydra	SQL Server 6.5		Template:Citation needed
Sphinx	SQL Server 7.0		citation	CitationClass=web }}</ref>
Plato	OLAP Services 7.0	"OLAP Services" was later renamed Microsoft Analysis Services	citation	CitationClass=web }}</ref>
Shiloh	SQL Server 2000	Version 8	Template:Citation needed
Rosetta	Reporting Services in SQL Server 2000		Template:Citation needed
Yukon	SQL Server 2005	Version 9	citation	CitationClass=web }}</ref> <ref name=yukon>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Picasso	Analysis Services in SQL Server 2005		Template:Citation needed
Katmai	SQL Server 2008	Version 10	citation	CitationClass=web }}</ref> <ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Kilimanjaro	SQL Server 2008 R2	Version 10.5	citation	CitationClass=web }}</ref>
Blue	SQL Server 2008 Report Designer 2.0	This is the standalone release of the tool for Reporting Services. It must not be confused with Report Builder 2.0.	citation	CitationClass=web }}</ref> <ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> <ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Denali	SQL Server 2012	Version 11	citation	CitationClass=web }}</ref> <ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> <ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Juneau	SQL Server Data Tools	Was included in SQL Server 2012, later released as a standalone downloadable application	citation	CitationClass=web }}</ref>
Crescent	Power View	A data visualisation tool that originally shipped as part of SQL Server 2012, later an add-in for Microsoft Excel	citation	CitationClass=web }}</ref>
SQL14	SQL Server 2014	Version 12	citation	CitationClass=web }}</ref>
Hekaton	SQL Server In-Memory OLTP	In-memory database engine built into SQL Server 2014	citation	CitationClass=web }}</ref>
SQL16	SQL Server 2016	Version 13	citation	CitationClass=web }}</ref>
Helsinki	SQL Server 2017	Version 14	citation	CitationClass=web }}</ref> <ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Seattle	SQL Server 2019	Version 15	<ref>Template:Cite news</ref>
Aris	SQL Server Big Data Clusters	Announced at Microsoft Ignite 2018 event on September 24–28. Retirement announced for Feb-28 2025	<ref>Template:Cite news</ref>
Dallas	SQL Server 2022	Version 16. Public preview available for download. Announced at Microsoft Build 2022 event on May 24	<ref>Template:Cite news</ref>

Others

Codename	Final name	Ref
Hermes	Microsoft System Management Server 1.0	<ref> {{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Catapult	Microsoft Proxy Server 1.0	<ref> {{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Geneva	Active Directory Federation Services	citation	CitationClass=web }}</ref>
Falcon	Microsoft Message Queue Server	<ref>Template:Cite magazine</ref>
Viper	Microsoft Transaction Server	<ref>Template:Cite magazine</ref>
Normandy	Microsoft's Commercial Internet System (CIS)	citation	CitationClass=web }}</ref>
Stirling	Microsoft Forefront Protection Suite	citation	CitationClass=web }}</ref>

Developers tools

Visual Studio family

Codename	Preliminary name	Final name	Notes	Ref
Thunder		Visual Basic 1.0	The first version of Visual Basic. The standard dialogs and controls created by the Visual Basic runtime library all have "Thunder" as a prefix of their internal type names (for example, buttons are internally known as ThunderCommandButton).	citation	CitationClass=web }}</ref>
Escher		Microsoft Visual Basic for MS-DOS		Template:Citation needed
Dolphin		Microsoft Visual C++ 2.0		Template:Citation needed
Zamboni		Microsoft Visual C++ 4.1	After Zamboni, an ice resurfacing machine.	<ref name="chrissmith"/>
Boston		Microsoft Visual Studio 97	Named for Boston, Massachusetts	citation	CitationClass=web }}</ref>
Aspen		Microsoft Visual Studio 6.0	Named after the popular ski destination Aspen, Colorado	citation	CitationClass=web }}</ref>
Cassini Web Server		ASP.NET Development Server	The lightweight local Web server that is launched in Visual Studio in order to test Web projects	citation	CitationClass=web }}</ref>
Hatteras	Visual Studio Team System's Source Control System	Template:N/A	Named after the Cape Hatteras Lighthouse in the Outer Banks region of North Carolina	citation	CitationClass=web }}</ref>
Ocracoke	Visual Studio Team System load testing suite	Template:N/A	Named after the Ocracoke Island Lighthouse on Ocracoke Island, also in North Carolina	<ref name="outerbanks" />
Currituck	Team Foundation Work Item Tracking	Template:N/A	Named after the Currituck Beach Lighthouse in Corolla, North Carolina	<ref name="outerbanks" />
Bodie	Team Foundation Server SDK	Template:N/A	Named after the Bodie Island Lighthouse in North Carolina	<ref name="outerbanks" />
Tuscany		Online version of Visual Studio.	Currently a research project	citation	CitationClass=web }}</ref>
Phoenix		Template:N/A	A Microsoft research software development kit	citation	CitationClass=web }}</ref>
Eaglestone		Visual Studio Team Explorer Everywhere	This is the name given to the Teamprise suite Microsoft acquired. The product is now named Visual Studio Team Explorer Everywhere	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
KittyHawk		Visual Studio LightSwitch	RAD tool aimed at non-programmers	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Rainier		Visual Studio .NET (2002)	Named for Mount Rainier, a volcanic mountain peak visible from the Seattle area (where Microsoft is based)	citation	CitationClass=web }}</ref>
Everett		Visual Studio .NET 2003	Named after the town Everett, Washington, in Washington state	citation	CitationClass=web }}</ref><ref name="Microsoft Codenames">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Whidbey<ref name="Microsoft Codenames"/>		Visual Studio 2005	Named after Whidbey Island in the Puget Sound<ref name="code-magazine.com" /><ref name="Fernandez D. (2003)" />
Orcas		Visual Studio 2008	Named after Orcas Island in the Puget Sound	<ref name="code-magazine.com" /><ref name="Fernandez D. (2003)" /><ref name="Microsoft Codenames"/>
Camano	Microsoft Test and Lab Manager	Microsoft Test Manager, a part of Visual Studio 2010 Test Professional, Premium and Ultimate editions	Named after Camano Island in the Puget Sound	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Rosario		Visual Studio Ultimate 2010 (formerly Team System or Team Suite)		citation	CitationClass=web }}</ref>
Cider		Template:N/A	Visual Studio designer for building Windows Presentation Foundation applications, meant to be used by application developers	citation	CitationClass=web }}</ref>
Monaco		Monaco Editor	In-browser IDE for Visual Studio. Monaco powers Visual Studio Code.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>

.NET Framework family

Codename	Final name	Notes	Ref
Astoria	WCF Data Services	Enables the creation and consumption of OData services for the web	citation	CitationClass=web }}</ref>
Atlas	ASP.NET AJAX	An implementation for ASP.NET of Ajax native to .NET Framework 2.0	citation	CitationClass=web }}</ref>
Avalon	Windows Presentation Foundation	Graphical subsystem released as part of .NET Framework 3.0	citation	CitationClass=web }}</ref>
Fusion	Template:N/A	.NET Framework subsystem for locating and loading assemblies, including GAC management	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Hailstorm	.NET My Services		<ref>Template:Cite news</ref>
Indigo	Windows Communication Foundation	An application programming interface (API) in .NET Framework for building connected, service-oriented applications	citation	CitationClass=web }}</ref>
Jolt	Silverlight 1.0		<ref>Template:Cite book</ref>
Lightning, Project 42	.NET Framework 1.0	Project Lightning was the original codename for the Common Language Runtime in 1997. The team was based in building 42, hence Project 42.	citation	CitationClass=web }}</ref><ref name="project42">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Project 7	Template:N/A	Early program to recruit implementors of both commercial and academic languages to target the Common Language Runtime. 7 was a prime factor of 42, metaphorizing the relationship between Project 7 and Project 42 (see above).	<ref name=smh1>Template:Cite news</ref>
Roslyn	.NET Compiler Platform	Open-source project that exposes programmatic access to compilers via corresponding APIs	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>

Languages

Codename	Final name	Notes	Ref
Clarity	Language Integrated Query (LINQ)	LINQ Language extensions to expose query syntax natively to languages such as Visual Basic .NET and C#	Template:Citation needed
D	M	Modelling language	Template:Citation needed
Jakarta	Visual J++	Named after the capital of Indonesia, Jakarta
Metro	Microsoft Design language	A typography-based design language	<ref>*Template:Cite book</ref>

Others

Codename	Final name	Notes	Ref
Godot	Microsoft Layer for Unicode	Named after the play Waiting for Godot (centered around the endless wait for a man named "Godot" who never comes), because it was felt to be long overdue.	citation	CitationClass=web }}</ref>
Volta	Template:N/A	A developer toolset for building multi-tier web applications	citation	CitationClass=web }}</ref>
Project Centennial	Desktop App Converter	Allows developers to re-package existing desktop apps into the APPX format of Universal Windows Platform and sell them in Windows Store.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>

Gaming hardware

Codename	Final name	Notes	Ref
DirectX Box	Xbox		citation	CitationClass=web }}</ref>
Natal	Kinect	Motion sensitive control system.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Xenon	Xbox 360	Successor to the original Xbox.	citation	CitationClass=web }}</ref>
Durango	Xbox One	Successor to Xbox 360.	citation	CitationClass=web }}</ref>
Edmonton	Xbox One S	Xbox One with 4K and HEVC Support.	citation	CitationClass=web }}</ref>
Scorpio	Xbox One X	Upgrade to Xbox One, announced at Electronic Entertainment Expo 2016. Has 6 TFLOPS GPU and 8-core CPU.	citation	CitationClass=web }}</ref>
Scarlett	Xbox Series X|S	Project name for a family of next-gen consoles. Xbox Anaconda and Xbox Lockhart are both part of Project Scarlet. Announced by Microsoft at E3 2018.	citation	CitationClass=web }}</ref>
Anaconda	Xbox Series X	Successor to Xbox One. Higher end model. Announced by Microsoft at The Game Awards 2019. Later called "Starkville"<ref name=":2">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>	<ref name="Windows Central" />Xbox Series X|S
Lockhart	Xbox Series S	Potential lower end model for a cheaper price. Was announced by Microsoft in September 2020. Would be successor to Xbox One S. Later called "Edith".<ref name=":2" />	citation	CitationClass=web }}</ref>
Ellewood	Xbox Series S - 1TB Digital Edition	Codename for the Xbox Series S - 1TB Digital Edition console.	<ref name=":2" />
Brooklin	Xbox Series X - 2TB Galaxy Black Special Edition	Codename for the Xbox Series X - 2TB Galaxy Black Special Edition console.	<ref name=":2" />
Edinburgh		Originally spotted by software developer bllyhlbrt on Twitter, a new codename, Xbox Edinburgh, can be seen within the Xbox One's operating system, underneath Lockhart and Anaconda.	citation	CitationClass=web }}</ref>
Count		One of the codenames originally spotted by software developer bllyhlbrt on Twitter.	<ref name="Edinburgh"/>

Office software

Codename	Preliminary name	Final name	Notes	Ref
Albany		Microsoft Equipt	Microsoft's all-in-one, subscription-based service for office, communication, and security software	citation	CitationClass=web }}</ref>
Bandit		Schedule+ 1.0	Microsoft's first Personal Information Manager	Template:Citation needed
Barney		Money 1.0	Microsoft's personal finance software (Flintstones theme)	Template:Citation needed
Betty		Money 2.0	Template:Citation needed
Budapest		Microsoft Office Communicator Web Access 2005	Template:Citation needed
Bullet		Microsoft Mail 3.0	Microsoft's first LAN-based email product written in-house	Template:Citation needed
Cirrus		Microsoft Access 1.0		Template:Citation needed
CRM V1.0, Tsunami		Microsoft CRM 1.0	The platform was initially codenamed Tsunami, but once the decision was made to make it an actual product it was just changed to the initials as the initials were enough of a codename.	citation	CitationClass=web }}</ref>
Danube Phase I		Microsoft CRM 1.2		<ref name="MS Dynamic CRM" />
Danube Phase II		Microsoft CRM 3		<ref name="MS Dynamic CRM" />
Dino		Microsoft Money 3.0		Template:Citation needed
Kilimanjaro	Titan	Microsoft CRM 4	Was originally Kilimanjaro but changed to Titan, as Kilimanjaro was too difficult to spell	<ref name="MS Dynamic CRM" />
Deco		Microsoft PhotoDraw		Template:Citation needed
Greenwich	Real-Time Communications Server 2003	Microsoft Office Live Communications Server 2003		Template:Citation needed
Istanbul		Microsoft Office Communicator 2005		Template:Citation needed
Maestro		Microsoft Office Business Scorecard Manager 2005		Template:Citation needed
Opus		Word for Windows v1.0 for Windows 2.x		Template:Citation needed
Oslo	Microsoft BizTalk Server SOA, SQL Server Modeling CTP	Template:N/A	Set of Service-oriented architecture (SOA) technologies	citation	CitationClass=web }}</ref><ref name="future 0f SSM">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Ren, Stimpy	Wren	Microsoft Outlook	"Stimpy" was merged into "Ren", which later became "Wren". "Ren" and "Stimpy" are references to Ren and Stimpy, characters of an American animated television series. "Wren", a homophone of "Ren", is a reference to Christopher Wren, the architect of St Paul's Cathedral.	citation	CitationClass=web }}</ref>
Rigel		Skype Room Systems	A meeting room system designed to interface with Skype	<ref>Template:Cite news</ref>
Tahiti	Microsoft SharedView	Template:N/A	A screen sharing tool which allows users to take over sessions and interact with remote desktops. No audio or conference facilities.	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Tahoe		SharePoint Portal Server 2001
Utopia		Microsoft Bob	Intended to be a user-friendly GUI	citation	CitationClass=web }}</ref>

Other codenames

Codename	Preliminary name	Final name	Notes	Ref
Acropolis		Template:N/A	Application framework for Smart Clients	Template:Citation needed
Aero Diamond		Template:N/A	Used during the development of Windows Vista to describe a set of advanced user interface effects for the Desktop Window Manager to be introduced after Vista's release	citation	CitationClass=web }}</ref>
Alexandria		Zune Marketplace	An online music store	Template:Citation needed
Argo		Zune	A digital media player	Template:Citation needed
Atlanta		Template:N/A	A cloud service that monitors Microsoft SQL Server deployments	citation	CitationClass=web }}</ref>
Baraboo		Microsoft HoloLens		<ref>Template:Cite magazine</ref>
Blackbird		Template:N/A	An online content-authoring platform centered around the concept of distributed Object Linking and Embedding (OLE) and meant to be an alternative to HTML. The developer tools were originally released in beta and some titles were made available on MSDN before it was scrapped in favor of web development around ASP and ActiveX and the designer was refashioned into Visual InterDev.	Template:Citation needed
Concur		Template:N/A	Aims to: define higher-level abstractions (above "threads and locks"); for today's imperative languages; that evenly support the range of concurrency granularities; to let developers write correct and efficient concurrent applications; with much latent parallelism; that can be efficiently mapped to the user's.	Template:Citation needed
Dallas		Template:N/A	Aims to help discover, purchase and manage, premium data subscriptions in the Windows Azure platform	citation	CitationClass=web }}</ref>
Dorado		Zune PC Client		Template:Citation needed
Eldorado		MVP Reconnect	Program to recognize alumni of Microsoft's Most Valuable Professional award program when they left the program in good standing or were not re-awarded.	citation	CitationClass=web }}</ref>
HailStorm		.NET My Services	Collection of web services centered around the storage and retrieval of information. Cancelled before it could fully materialize.	citation	CitationClass=web }}</ref><ref name="NYTimes2">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Honolulu		Windows Admin Center		Template:Citation needed
Ibiza		Azure Portal	Website for managing cloud resources	citation	CitationClass=web }}</ref>
Kratos		PowerApps	Software for building and sharing native, mobile, and Web apps	citation	CitationClass=web }}</ref>
Kumo		Bing	Microsoft's set of features improving Live Search search engine	Template:Citation needed
Marvel		The Microsoft Network	The classic version of MSN, originally as a proprietary, "walled garden" online service	Template:Citation needed
Media2Go		Windows Mobile software for Portable Media Centers	Platform built on Windows Mobile found on portable media players	<ref>Microsoft Unveils "Media2Go" Portable Media Player Platform: Intel to Deliver Initial Hardware Reference Template:Webarchive</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Metro		XML Paper Specification (XPS)	Named after Metro by T-Mobile, a wireless prepaid service in the United States.Template:Citation needed	Template:Citation needed
Milan	Surface	Microsoft PixelSense	Table-top style computer with multi-touch touchscreen interface	Template:Citation needed
Mira		Template:N/A	Windows CE .NET-based technology for smart displays	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Monaco		Template:N/A	Music-making program similar to Apple GarageBand application	citation	CitationClass=web }}</ref>
Origami		Ultra-Mobile PC		Template:Citation needed
Palladium	Trusted Windows	Template:N/A	Effort to develop a small, very secure operating environment within Windows, including curtained memory, trusted input, and graphics. Project renamed to Next-Generation Secure Computing Base, and was never fully implemented.	citation	CitationClass=web }}</ref><ref name="TrustedWindows">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Softsled		Template:N/A	Software based Windows Media Center ExtenderTemplate:Clarify	Template:Citation needed
Springfield	Microsoft Popfly	Template:N/A	Website in Alpha testing stage providing mashup and webpages creation tools, with publishing as Rich Internet Application option	<ref>Template:Cite news</ref>
Sydney	Bing Chat	Copilot		citation	CitationClass=web }}</ref>
Wolverine		TCP/IP stack for Windows for Workgroups 3.11	Named after the Wolverine, a character from Marvel Comics.	<ref>Template:Cite magazine</ref>

External links

• Microsoft Codenames List