10/01/2020

• Documize : Documize is an open source modern, lightweight and comprehensive alternative to Confluence. It's built with Golang + EmberJS and compiled down to a si...
• Postal : Postal is a complete and fully featured mail server for use by websites & web servers. Think Sendgrid, Mailgun or Postmark but open source and ready f...
• 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
• Mattermost : Mattermost is a self-hosted solution for bringing all your team communication to one place, and making it searchable and accessible anywhere