Open source collaboration platforms

Here are the top 13 open source collaboration platforms in decreasing popularity order from the last two years, along with their key features and reviews. These platforms offer various features and functionalities to support remote teams and enhance collaboration.

1. Rocket.Chat:

   • Key features: Instant messaging, video conferencing, screen sharing, customizable workflows, and integrations.
   • Review: "Deemed as one of the best open source alternatives to Slack, it helps teams communicate instantly and share updates on the go." - [3]

2. OpenProject:

   • Key features: Project management, agile, traditional, and waterfall methodologies, task management, and customizable workflows.
   • Review: "It brings transparency between teams by allowing them to work on shared goals. Easy to update tasks and assign them to your team." - [3]
     
     

3. NextCloud:

   • Key features: Document editing and sharing, calendar and contacts syncing, audio/video calls, password-protected file shares, and integrations.
   • Review: "It’s an on-premise content collaboration platform that helps you take your team productivity to the next level and gain control over your data." - [3]
     
     
   

4. Switchboard:

   • Key features: Team messaging, file sharing, video calls, Kanban boards, and customizable workflows.
   • Review: "It is self-hosted, allowing you to retain control over data and security. The intuitive interface makes it easy for teams to adopt." - [1]

5. Kolab:

   • Key features: Centralized workflow management, easy searching of text or documents, and scalability.
   • Review: "It is well-suited for teams working from different locations, as it allows for centralized workflow management and easy searching of any text or document across the entire project." - [2]

6. BigBlueButton:

   • Key features: Video conferencing, screen sharing, and customizable workflows.

7. Mattermost:

   • Key features: Team messaging, file sharing, video calls, and customizable workflows.
   
   
   
   
   
   

8. Zulip:

   • Key features: Instant messaging, video conferencing, and customizable workflows.
   • Review: Not available in the provided sources.

9. Kune:

   • Key features: Document management, project management, brainstorming, content management, and real-time editing.

10. Group Office:

    • Key features: Document management, project management, and customizable workflows.
    • Review: Not available in the provided sources.

11. Slite:

    • Key features: Document management, version control, discussion boards, content management, and real-time editing.

12. HumHub:

    • Key features: Social networking, group and team communication, and collaboration.
    • Review: "It is a self-hosted solution that runs on almost every server and provides a user-friendly interface." - [4]

13. Orangescrum:

    • Key features: Project management, Gantt charts, resource utilization, time logs, Kanban views, and conversation threads.

Citations: 

[1] https://osssoftware.org/blog/choosing-an-open-source-collaboration-platform/ [2] https://gemoo.com/blog/open-source-collaboration-tools.htm [3] https://www.rocket.chat/blog/open-source-collaboration-software [4] https://www.softwaresuggest.com/collaboration-software/open-source [5] https://filestage.io/blog/online-collaboration-tools/