HedgeDoc : HedgeDoc (formerly known as CodiMD) is an open-source, web-based, self-hosted, collaborative markdown editor.
You can use it to easily collaborate on ...
Garage : An open-source distributed storage service you can self-host to fullfill many needs.
Riot : Riot allows teams to communicate across a wide range of collaboration apps. If some team members use Riot while others use IRC, Slack or Gitter, Riot ...
Kinto : Kinto is a lightweight JSON storage service with synchronisation and sharing abilities.