Comparison of file transfer protocols

This article lists communication protocols that are designed for file transfer over a telecommunications network.

Protocols for shared file systems—such as 9P and the Network File System—are beyond the scope of this article, as are file synchronization protocols.

Protocols for packet-switched networks

A packet-switched network transmits data that is divided into units called packets. A packet comprises a header (which describes the packet) and a payload (the data). The Internet is a packet-switched network, and most of the protocols in this list are designed for its protocol stack, the IP protocol suite.

They use one of two transport layer protocols: the Transmission Control Protocol (TCP) or the User Datagram Protocol (UDP). In the tables below, the "Transport" column indicates which protocol(s) the transfer protocol uses at the transport layer. Some protocols designed to transmit data over UDP also use a TCP port for oversight.

The "Server port" column indicates the port from which the server transmits data. In the case of FTP, this port differs from the listening port. Some protocols—including FTP, FTP Secure, FASP, and Tsunami—listen on a "control port" or "command port", at which they receive commands from the client.

Similarly, the encryption scheme indicated in the "Encryption" column applies to transmitted data only, and not to the authentication system.

Overview

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Protocol		Original author	First published	Protocol suite	Standard	Template:Abbr
Full name	Abbreviation
Background Intelligent Transfer Service	BITS	Microsoft	2001	Template:N/a	Template:Nonpartisan	citation	CitationClass=web }}</ref>
BitTorrent	BT	Bram Cohen	2001	Template:N/a	Template:Nonpartisan	citation	CitationClass=web }}</ref>
CCSDS File Delivery Protocol	CFDP		2002	Template:N/a	Template:Operational
Cross File Transfer	CFT			Template:N/a	Template:Nonpartisan
Ether File Transfer Protocol	EFTP	John Shoch	1979	PARC Universal Packet	Template:Nonpartisan	<ref>Template:Cite book</ref><ref>Template:Cite book</ref>
Fast and Secure Protocol	FASP	Ying Xu, Michelle Munson, Serban Simu	2007	Template:N/a	Template:Nonpartisan	<ref>Template:Cite patent</ref>
File Delivery over Unidirectional Transport	FLUTE	Internet Society	2004	Template:N/a	Template:Partial	<ref>Template:Cite IETF</ref>
File Service Protocol	FSP	Wen-King Su	1991	Template:N/a	Template:Nonpartisan	<ref>Template:Cite book</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
File Transfer Access and Management	FTAM		1988		Template:Operational
File Transfer Protocol	FTP	Abhay Bhushan	1971	Internet protocol suite	Template:Ya	<ref>Template:Cite IETF</ref>
FTP Secure	FTPS	Internet Society	1997	Internet protocol suite	Template:Partial	<ref>Template:Cite IETF</ref><ref>Template:Cite IETF</ref>
HTTP Secure	HTTPS	Taher Elgamal et al.	1995	Internet protocol suite	Template:Ya	<ref>Template:Cite magazine</ref><ref>Template:Cite IETF</ref>
Host Unix Linkage File Transfer	HULFT	Template:Dunno	1993	Template:N/a	Template:Nonpartisan
Hypertext Transfer Protocol	HTTP	Tim Berners-Lee et al.	1991	Internet protocol suite	Template:Ya	citation	CitationClass=web }}</ref><ref name="Iwaya">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Micro Transport Protocol	μTP	Ludvig Strigeus, Greg Hazel, Stanislav Shalunov, Arvid Norberg, Bram Cohen	2007	Template:N/a	Template:Nonpartisan	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Multicast Dissemination Protocol	MDP		1993		Template:Nonpartisan
Multicast File Transfer Protocol	MFTP	C. Kenneth Miller et al.	1995	Template:N/a	Template:Partial failure	<ref>Template:Cite patent</ref>
NACK-Oriented Reliable Multicast Transport Protocol	NORM		2000		Template:Partial
Odette File Transfer Protocol	OFTP	Organisation for Data Exchange by Tele Transmission in Europe	1986	X.25	Template:Partial	<ref name="Nash">Template:Cite IETF</ref>
Odette File Transfer Protocol 2	OFTP2	Organisation for Data Exchange by Tele Transmission in Europe	2007	X.25, Internet protocol suite	Template:Partial	<ref name="Friend">Template:Cite IETF</ref>
Reliable Blast UDP	RBUDP	Eric He et al.	2002	Template:N/a	Template:Nonpartisan	<ref name="He">Template:Cite conference</ref>
Remote copy	rcp	Template:Dunno	1982	Internet protocol suite	Template:Nonpartisan	<ref>Template:Cite book</ref>
Secure copy	SCP	Tatu Ylönen	1995	Secure Shell	Template:Nonpartisan	citation	CitationClass=web }}</ref>
Secure Hypertext Transfer Protocol	S-HTTP	IETF Web Transaction Security Working Group	1999	Template:N/a	Template:Partial	<ref>Template:Cite IETF</ref>
Simple Asynchronous File Transfer	SAFT	Ulli Horlacher	1995	Template:N/a	Template:Nonpartisan	citation	CitationClass=web }}</ref><ref name="sendfile">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Simple File Transfer Protocol	SFTP	Mark K. Lottor	1984	Template:N/a	Template:Partial	<ref>Lottor (1984), pp. 1, 13</ref>
SSH file transfer protocol	SFTP	Tatu Ylönen	Template:Sort	Secure Shell	Template:Partial failure	<ref>Template:Cite mailing listTemplate:Dead link</ref>
T.127	T.127	ITU<ref name="ITU-IT T.127">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || 1995 <ref name="ITU-IT T.127 (08/95)">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref> || Template:N/a || Template:Operational ||
Trivial File Transfer Protocol	TFTP	Noel Chiappa	1980	Internet protocol suite	Template:Ya	<ref>Template:Cite IETF</ref>
Tsunami UDP Protocol	Tsunami	Mark Meiss et al.	2002	Template:N/a	Template:Nonpartisan	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Tus open protocol for resumable file uploads	tus	Felix Geisendörfer, Marius Kleidl et al.	2014	Template:N/a	Template:Nonpartisan	<ref name="github">Template:GitHub</ref><ref name="tusio">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
UDP-based Data Transfer Protocol	UDT	Yunhong Gu	2004	Template:N/a	Template:Nonpartisan
UDP-based File Transfer Protocol	UFTP	Dennis Bush	2001	Template:N/a	Template:Nonpartisan	citation	CitationClass=web }}</ref>
Unix-to-Unix Copy	UUCP	Mike Lesk	1979	Template:N/a	Template:Nonpartisan
Warp Speed Data Transfer	WDT	Laurent Demailly et al.	2015	Template:N/a	Template:Nonpartisan	citation	CitationClass=web }}</ref>

Features

The "Managed" column indicates whether the protocol is designed for managed file transfer (MFT). MFT protocols prioritise secure transmission in industrial applications that require such features as auditable transaction records, monitoring, and end-to-end data security. Such protocols may be preferred for electronic data interchange.<ref>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

Protocol	Encryption Template:Small	Transfer resuming	Multicast capable	Managed	Template:Abbr
BITS	Template:YaTemplate:Efn	Template:Yes	Template:No	Template:No
BitTorrent	Template:N/aTemplate:Efn	Template:Yes	Template:Yes-No	Template:No	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
CCSDS File Delivery Protocol (CFDP)	Template:None	Template:Yes	Template:No	Template:No
Cross File Transfer (CFT)	Template:Ya				Template:Yes <ref name="Axway Software">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref name="docs.axway.com">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Ether File Transfer Protocol (EFTP)	Template:N/a	Template:Dunno	Template:No	Template:No	citation	CitationClass=web }}</ref>
Fast and Secure Protocol (FASP)	Template:Ya	Template:Yes	Template:No		citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
File Delivery over Unidirectional Transport (FLUTE)	Template:OptionalTemplate:Efn	Template:No	Template:Yes		<ref>Template:Cite IETF</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>Template:Cite journal</ref>
File Service Protocol (FSP)	Template:N/a	Template:Yes	Template:No	Template:No	citation	CitationClass=web }}</ref><ref>Template:Cite book</ref>
File Transfer Access and Management (FTAM)	Template:DunnoTemplate:Efn				citation	CitationClass=web }}</ref>
File Transfer Protocol (FTP)	Template:N/a	Template:YesTemplate:Efn	Template:No	Template:No	<ref>Template:Cite IETF</ref><ref>Template:Cite book</ref><ref>Template:Cite IETF</ref><ref>Template:Cite IETF</ref><ref>Template:Cite IETF</ref>
FTP Secure (FTPS)	Template:Ya	Template:Yes	Template:No	Template:No
HTTP Secure (HTTPS)	Template:Ya	Template:Yes	Template:No	Template:No	<ref name="Iwaya"/><ref>Template:Cite IETF</ref><ref>Template:Cite IETF</ref>
Host Unix Linkage File Transfer (HULFT)	Template:Ya	Template:Dunno	Template:No		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>
Hypertext Transfer Protocol (HTTP)	Template:N/a	Template:Yes	Template:No	Template:No	<ref name="Iwaya"/><ref>Template:Cite IETF</ref>
Micro Transport Protocol (μTP)	Template:N/a	Template:Yes	Template:Yes-No	Template:No	<ref name="Norberg"/>
Multicast Dissemination Protocol (MDP)	Template:N/a		Template:Yes	Template:Yes	citation	CitationClass=web }}</ref><ref name="nrl.navy.mil">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Multicast File Transfer Protocol (MFTP)	Template:N/a	Template:Yes	Template:Yes	Template:No	<ref>Template:Cite IETF</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
NACK-Oriented Reliable Multicast Transport Protocol (NORM)	Template:Ya		Template:Yes	Template:Yes	citation	CitationClass=web }}</ref><ref name="Adamson">Template:Cite IETF</ref>
Odette File Transfer Protocol (OFTP)	Template:N/a			Template:Yes	<ref name="Nash"/>
Odette File Transfer Protocol 2 (OFTP2)	Template:Ya			Template:Yes	<ref name="Friend"/>
Reliable Blast UDP (RBUDP)	Template:N/a	Template:No	Template:No		<ref name="He"/><ref>Template:Cite conference</ref><ref>Template:GitHub</ref>
Remote copy (rcp)	Template:N/a	Template:No	Template:No	Template:No	citation	CitationClass=web }}</ref>
Secure copy (SCP)	Template:Ya	Template:No	Template:No	Template:No
Secure Hypertext Transfer Protocol (S-HTTP)	Template:Ya	Template:No	Template:No	Template:No	<ref>Template:Cite IETF</ref>
Simple Asynchronous File Transfer (SAFT)	Template:Ya	Template:Dunno	Template:No	Template:No	citation	CitationClass=web }}</ref>
Simple File Transfer Protocol (SFTP)	Template:N/a	Template:Yes	Template:No	Template:No	<ref>Lottor (1984), p. 10</ref>
SSH file transfer protocol (SFTP)	Template:Ya	Template:Yes	Template:No	Template:No	citation	CitationClass=web }}</ref>
T.127	Template:N/a	Template:Yes	Template:Yes	Template:No	citation	CitationClass=web }}</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>Template:Cite book</ref>
Trivial File Transfer Protocol (TFTP)	Template:N/a	Template:No	Template:No	Template:No	<ref>Template:Cite IETF</ref>
Tsunami UDP Protocol	Template:N/a	Template:No	Template:No	Template:No	citation	CitationClass=web }}</ref><ref name="FC">{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
Tus open protocol for resumable file uploads (tus)	Template:OptionalTemplate:Efn	Template:Yes	Template:No	Template:No	<ref name="github"/><ref name="tusio"/>
UDP-based Data Transfer Protocol (UDT)	Template:Unofficial	Template:No	Template:No	Template:No	<ref name="FC"/><ref>Template:Cite conference</ref><ref>Template:Cite thesis</ref>
UDP-based File Transfer Protocol (UFTP)	Template:YaTemplate:Efn	Template:Yes	Template:Yes	Template:No	citation	CitationClass=web }}</ref>
Unix-to-Unix Copy (UUCP)	Template:N/a	Template:SomeTemplate:Efn	Template:No	Template:No	citation	CitationClass=web }}</ref><ref>Template:Cite book</ref>
Warp Speed Data Transfer (WDT)	Template:Ya	Template:Yes	Template:No	Template:No	<ref>Template:Cite AV mediaTemplate:Cbignore</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref><ref>Template:GitHub</ref>

Ports

In the table below, the data port is the network port or range of ports through which the protocol transmits file data. The control port is the port used for the dialogue of commands and status updates between client and server.

The column "Assigned by IANA" indicates whether the port is listed in the Service Name and Transport Protocol Port Number Registry, which is curated by the Internet Assigned Numbers Authority (IANA). IANA devotes each port number in the registry to a specific service with a specific transport protocol. The table below lists the transport protocol in the "Transport" column.

Protocol		Data port			Control port			Assigned Template:Small	Assignee	Template:Abbr
		Server	Client	Transport	Server	Client	Transport
BITS		80/443Template:Efn / 137–139Template:Efn		TCP / UDP				Template:No	Template:N/a
BitTorrent		6881Template:Efn	6881	TCP	6881	6881	TCP	Template:No	Template:N/a	citation	CitationClass=web }}</ref>
CCSDS File Delivery Protocol (CFDP)
Cross File Transfer (CFT)		1761Template:Efn		TCP / X.25					<ref name="Axway Software"/><ref name="docs.axway.com"/>
Ether File Transfer Protocol (EFTP)		Template:N/a	Template:N/a	Template:N/a	Template:N/a	Template:N/a	Template:N/a	Template:N/a	Template:N/a
Fast and Secure Protocol (FASP)		≥33001		UDP	22		TCP	Template:No	Template:N/a	<ref name="IANA"/>
File Delivery over Unidirectional Transport (FLUTE)		4001		UDP				Template:No	Template:N/a	<ref name="IANA"/>
File Service Protocol (FSP)		Template:VariesTemplate:Efn		UDP				Template:No	Template:N/a	<ref name="IANA"/>
File Transfer Access and Management (FTAM)		4800 / 102		TCP						citation	CitationClass=web }}</ref>
File Transfer Protocol (FTP)	Active mode	20	20	TCPTemplate:Efn	21	≥1024	TCP	rowspan="2" Template:Yes	Jon Postel	<ref name="IANA"/>
	Passive mode	≥1024Template:Efn	≥1024
FTP Secure (FTPS)		989		TCP	990		TCP	Template:Yes	Christopher Allen	<ref name="IANA"/>
HTTP Secure (HTTPS)		443		TCP			TCP	Template:Yes	IESG	<ref name="IANA"/>
Host Unix Linkage File Transfer (HULFT)		30000		TCP			TCP	Template:No	Template:N/a	<ref name="IANA"/>
Hypertext Transfer Protocol (HTTP)		80		TCP			TCP	Template:Yes	Tim Berners-Lee	<ref name="IANA"/>
Micro Transport Protocol (μTP)				UDP				Template:No	Template:N/a	<ref name="IANA"/>
Multicast Dissemination Protocol (MDP)		Template:Varies		UDP						citation	CitationClass=web }}</ref><ref name="nrl.navy.mil"/>
Multicast File Transfer Protocol (MFTP)		5402		UDP				Template:Yes	Steve Bannister	<ref name="IANA"/>
NACK-Oriented Reliable Multicast Transport Protocol (NORM)				UDP						<ref name="NACK-Oriented Reliable Multicast N"/><ref name="Adamson"/>
Odette File Transfer Protocol (OFTP)		3305		TCP / X.25			TCP / X.25			<ref name="Nash"/>
Odette File Transfer Protocol 2 (OFTP2)		6619		TCP / X.25			TCP / X.25			<ref name="Friend"/>
Reliable Blast UDP (RBUDP)		Template:Varies		UDP				Template:No	Template:N/a	<ref name="IANA"/>
Remote copy (rcp)		514		TCP			TCP	Template:Yes		<ref name="IANA"/>
Secure copy (SCP)		22		TCP			TCP	Template:Yes		<ref name="IANA"/>
Secure Hypertext Transfer Protocol (S-HTTP)		80		TCP			TCP	Template:No	Template:N/a	<ref name="IANA"/>
Simple Asynchronous File Transfer (SAFT)		487		TCP				Template:Yes	Ulli Horlacher	<ref name="IANA"/>
Simple File Transfer Protocol (SFTP)		115		TCP			TCP	Template:Yes	Mark Lottor	<ref name="IANA"/>
SSH file transfer protocol (SFTP)		22		TCP			TCP	Template:Yes		<ref name="IANA"/>
T.127		1503		TCP			TCP	Template:Yes	Jim Johnston	<ref name="IANA"/>
Trivial File Transfer Protocol (TFTP)		69		UDP				Template:Yes	David Clark	<ref name="IANA"/>
Tsunami UDP Protocol		Template:Varies		UDP			TCP	Template:No	Template:N/a	<ref name="IANA"/>
Tus open protocol for resumable file uploads (tus)		80Template:Efn		TCP			TCP	Template:No	Template:N/a	<ref name="IANA"/>
UDP-based Data Transfer Protocol (UDT)		Template:Varies		UDP				Template:No	Template:N/a	<ref name="IANA"/>
UDP-based File Transfer Protocol (UFTP)		1044		UDP				Template:No	Template:N/a	<ref name="IANA"/>
Unix-to-Unix Copy (UUCP)		540		TCP			TCP	Template:Yes		<ref name="IANA"/>
Warp Speed Data Transfer (WDT)		Template:Varies		TCP			TCP	Template:No	Template:N/a	<ref name="IANA"/>

Serial protocols

File:RS-232-Cable-9-25.jpg

A 9-pin to 25-pin RS-232 adapter cable

The following protocols were designed for serial communication, mostly for the RS-232 standard. They are used for uploading and downloading computer files via modem or serial cable (e.g., by null modem or direct cable connection). UUCP is one protocol that can operate with either RS-232 or the Transmission Control Protocol as its transport. The Kermit protocol can operate over any computer-to-computer transport: direct serial, modem, or network (notably TCP/IP, including on connections secured by SSL, SSH, or Kerberos). OBject EXchange is a protocol for binary object wireless transfer via the Bluetooth standard. Bluetooth was conceived as a wireless replacement for RS-232.

Overview

Protocol	Author	First released	License	Description	Template:Abbr
BiModem	Erik Labs	1989		Bi-directional transfers.
BLAST	Communications Research Group	1981		Powerful protocol originating on the Data General Nova minicomputer, and then ported to micros and mainframes.	<ref>Template:Cite news</ref>
C-MODEM	Lavio Pareschi	1989		Packet lengths from 32 to 4096 bytes, optional (but normally used) streaming mode.
B protocol	CompuServe	1981		Offered file transfer as well as a command stream.
JMODEM	Richard B. Johnson	Template:Dunno		XMODEM derivative with blocks from 512 to 8192 bytes and RLE compression.
HS/Link	Samuel H. Smith	1991
Kermit	Frank da Cruz et al.	1981	Open Source (BSD) as of 2011	Transport- and platform-independent transfer of text and binary files across full- or half-duplex connections with conversion of text file formats and character sets.	<ref>da Cruz (1987) p. 3</ref>
LeechModem	Sam Brown	Template:Dunno		Variations of X and Y that faked failed downloads in order to avoid BBS download quotas.
Lynx	Matthew Thomas	1989		Similar to Kermit: 64-byte packets, 2 to 16 packets per window, CRC-32. Little or no support outside the Lynx program itself.
NMODEM	L. B. Neal	1990		Essentially XMODEM-CRC with 2048 byte blocks.
OBEX File Transfer Protocol	Template:Dunno	Template:Dunno		A synchronous file transfer protocol in the OBject EXchange (OBEX) Bluetooth profile.
OBEX Push	Template:Dunno	Template:Dunno		An asynchronous file transfer protocol in the OBject EXchange (OBEX) Bluetooth profile.	citation	CitationClass=web }}</ref>
Punter	Steve Punter	Template:Dunno		Suite of similar-but-different XMODEM-like protocols for various Commodore machines.
SEAlink	Thom Henderson	1986		A MODEM7/XMODEM-compatible protocol with sliding window support developed to avoid propagation delays in satellite transmissions and packet networks.	<ref>Template:GitHub</ref><ref>Template:Cite book</ref><ref>Template:Cite book</ref>
SMODEM	Arisoft	Template:Dunno
TMODEM	Mike Bryeans	Template:Dunno
UUCP	Mike Lesk	1979		Suite of protocols for copying files between Unix machines, used for many purposes including the distribution of email. Also allows commands to be sent, which led to the first internet worms. The file transfer protocol within UUCP is the "g" protocol.	citation	CitationClass=web }}</ref>
MODEM7	Mark M. Zeigler, James K. Mills	1980		Slight extension of XMODEM to add filename support and batch transfers.	<ref>Template:Cite magazine</ref>
XMODEM	Ward Christensen	1977	Template:Good	Very simple protocol that saw widespread use and provided the pattern for many following protocols.	<ref>Glass (1988) p. 87</ref>
WXMODEM	Peter Boswell	1986	Template:Good	Version of XMODEM with sliding windows for higher performance.	<ref name="Glass_p89">Glass (1988) p. 89</ref><ref>Template:Cite book</ref>
YMODEM	Chuck Forsberg	1985	Template:Good	Series of optional expansions on XMODEM for higher performance.	<ref name="Glass_p89"/>
ZMax	Mike Bryeans	Template:Sort		Modifications to ZMODEM to allow packets up to 32 kB in length.
ZMODEM	Chuck Forsberg	1986	Template:Good	Streaming protocol that forsakes XMODEM compatibility but offers a wide variety of new features and improved performance. Became almost universal on BBS systems in the early 1990s.	<ref name="Glass_p89"/>

Features

Protocol	Data block size Template:Small	Data compression	Error detection	Transfer resuming	Bidirectional	Sliding window	Template:Abbr
BiModem					Template:Yes
BLAST	84–1024+	RLE	CRC	Template:Yes	Template:Yes	Template:Yes	<ref>Template:Cite news</ref>
C-MODEM	32–4096		CRC	Template:Yes
B protocol	128–2048		CRC32 / CRC16 / 8-bit checksum	Template:Yes		Template:Yes
JMODEM	64–8192	RLE
HS/Link			CRC32	Template:Yes	Template:Yes
Kermit	≤9024 (negotiated)	RLE (run length encoding, negotiated)	Checksum or CRC16 (negotiated)	Template:Yes (binary files only, negotiated)	Template:No	Template:Optional	<ref>da Cruz (1987) pp. 234, 253, 307</ref>
LeechModem
Lynx		RLE	CRC32	Template:Yes
NMODEM	2048
OBject EXchange
Punter
SEAlink				Template:Yes		Template:Yes
SMODEM					Template:Yes
Tmodem				Template:No
UUCP "g"	≤4096	Template:No		Template:No			<ref>Template:Cite book</ref><ref>{{#invoke:citation/CS1|citation	CitationClass=web }}</ref>
MODEM7	128	Template:No	Checksum			Template:Partial
XMODEM	128	Template:No	Checksum			Template:Partial
WXMODEM	≤512					Template:Yes
YMODEM	1024	Template:No	CRC16
ZMax	≤~32,768		CRC32
ZMODEM	256 / 1024	Template:No	CRC32	Template:Yes		Template:Yes

References

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Further reading

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