glitch-soc Mastodon fork
Infosec.Exchange runs on a modified version of Mastodon known as glitch-soc.
Additional features
The glitch-soc project offers a heavily-customized version of Mastodon which provides a significant list of features beyond those offered by the upstream Mastodon project. Some features developed in glitch-soc have now been ported back to the original Mastodon project.