|Original author(s)||Tom Preston-Werner, Rick Olson, Dawa Ometto, Bart Kamphorst|
|Developer(s)||GitHub and community|
|Initial release||February 16, 2009citation needed][|
5.2.3 / 18 April 2021; 25 May 2022
|Operating system||Unix-like, macOS, Windows|
Gollum is a wiki software using git as the back end storage mechanism, and written mostly in Ruby. It started life as the wiki system used by the GitHub web hosting system. Although the open source Gollum project and the software currently used to run GitHub wikis have diverged from one another, Gollum strives to maintain compatibility with the latter.
Gollum wikis are simply Git repositories that adhere to a specific format. Gollum pages may be written in a variety of formats including Markdown, AsciiDoc, ReStructuredText, Creole and MediaWiki markup.
Editing the pages can be done via the provided web interface, via its API or with a text editor directly in the git repository.