Mattermost is an open source platform for secure collaboration across the entire software development lifecycle.. - mattermost/mattermost

Docmost is an open-source collaborative wiki and documentation software. It is an open-source alternative to Confluence and Notion. - docmost/docmost

A web-based collaborative LaTeX editor.

🌻 The collaborative editing software that runs Wikipedia. Mirror from https://gerrit.wikimedia.org/g/mediawiki/core. See https://mediawiki.org/wiki/Developer_access for contributing. - GitHub - wik...

CodiMD - Realtime collaborative markdown notes on all platforms. - GitHub - hackmdio/codimd: CodiMD - Realtime collaborative markdown notes on all platforms.