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 ...
Zulip : Powerful slack-like open source group chat
Basecamp : Basecamp is a web-based project management tool. Its primary features are to-do lists, milestone management, forum-like messaging, file sharing, and t...
Beehive : Beehive is an event and agent system, which allows you to create your own agents that perform automated tasks triggered by events and filters. It is m...
OpenPhoto : A free, hosted, portable and open source photo sharing service. A photo application that lets you store your photos on Dropbox, Amazon S3 or in your g...
Mattermost is a self-hosted solution for bringing all your team communication to one place, and making it searchable and accessible anywhere