ht-//Dig
Template:Correct title {{#invoke:Infobox|infobox}}Template:Template other{{#invoke:Check for unknown parameters | check | showblankpositional=1 | unknown = Template:Main other | preview = Page using Template:Infobox software with unknown parameter "_VALUE_"|ignoreblank=y | AsOf | author | background | bodystyle | caption | collapsetext | collapsible | developer | discontinued | engine | engines | genre | included with | language | language count | language footnote | latest preview date | latest preview version | latest release date | latest release version | latest_preview_date | latest_preview_version | latest_release_date | latest_release_version | licence | license | logo | logo alt | logo caption | logo upright | logo size | logo title | logo_alt | logo_caption | logo_upright | logo_size | logo_title | middleware | module | name | operating system | operating_system | other_names | platform | programming language | programming_language | released | replaced_by | replaces | repo | screenshot | screenshot alt | screenshot upright | screenshot size | screenshot title | screenshot_alt | screenshot_upright | screenshot_size | screenshot_title | service_name | size | standard | title | ver layout | website | qid }}Template:Main other Template:Text is a free software indexing and searching system created in 1995 by Andrew Scherpbier while he was employed at San Diego State University.<ref name="openvms">Winston, A.:"OpenVMS with Apache, OSU and WASD: The Nonstop Webserver", page 179. Digital Press, 2003</ref><ref name="htdig">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> It can provide a search engine for a single website.
It includes three groups of files: a set of tools for indexing, a set of tools for searching, and a set of HTML files for building the user interface to access the search engine.<ref name="lnxrev">Template:Usurped</ref> Template:Text works differently from most search engines as most engines use a two-step process, building an index and searching it. Template:Text indexes pages in full, then processes the pages into a searchable form later using soundex and metaphone.<ref name="algdesign">Skiena, S.:"The Algorithm Design Manual", page 408. Springer Publishing, 1998</ref> Template:Text also stores fuzzy match information instead of using a dynamic algorithm.<ref>Behcet Sarikaya: "Geographic Location in the Internet", pages 145-146. Springer Publishing, 2002</ref> At one time, over 500 organizations used Template:Text to index sites they owned. Notable sites included Blizzard Entertainment, Greenpeace, and The Mozilla Foundation.<ref name="htuses">ht://Dig: Sites that Use ht://Dig</ref>
The last official release is Dig 3.2.0b6 announced on 16 June 2004. Only sporadic maintenance is in evidence since that date at the project's bug reporting page. It was used by the GNU project's website for a long time but was replaced in 2008 with Hyper EstraierTemplate:Citation needed.