head to head · open source
OpenProject vs CommunityServer
OpenProject has 16,933 GitHub stars, 3,676 forks, 224 open issues and last shipped yesterday. CommunityServer has 3,176 stars, 674 forks, 206 open issues and last shipped 6 months ago. OpenProject leads on adoption by 433% (16,933 vs 3,176 stars). OpenProject is written in Ruby under GPL-3.0; CommunityServer is written in C# under Apache-2.0. OpenProject has attracted 22% as many forks as stars, CommunityServer 21%. OpenProject was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| OpenProject | CommunityServer | |
|---|---|---|
| GitHub stars | ★ 17K | ★ 3.2K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | Ruby | C# |
| Last push | 2026-11-02 | 2026-05-05 |
| Forks | ⑂ 3.7K | ⑂ 674 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenProject if
- You weight community size — 17K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Ruby
- You value the larger contributor base for long-term maintenance
pick CommunityServer if
- You want the CommunityServer feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C#
- You evaluated both and CommunityServer fits your workflow better
About OpenProject
OpenProject We empower teams to achieve great things together for the good of society. OpenProject is a web based open source project management software for teams and organizations that require transparency, flexibility, and data sovereignty. Manage projects, portfolios, products, tasks, bugs, agile workflows, roadmaps, and team collaboration in a single platform. OpenProject can be self hosted and is designed for organizations looking for an open source enterprise ready alternative to tools such as Jira, MS Project, Monday, Asana, YouTrack while maintaining full control over their data and infrastructure…
read the full OpenProject overview →
About CommunityServer
Website Help Center API About Welcome to ONLYOFFICE Groups 👋 ONLYOFFICE Groups (formerly Community Server) is a free, open source collaborative platform that acts as the central hub for your team. Manage documents, projects, clients, and emails—all in one place\! Starting from version 11.0, Community Server is distributed as ONLYOFFICE Groups under the Apache 2.0 license. Features ✨ 🗂️ Document Management Organize and share files with flexible access permissions. Integrate with popular cloud storage services like Google Drive, Box, Dropbox, OneDrive, ownCloud. Embed documents directly into your websites or…
read the full CommunityServer overview →
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Frequently asked questions
Is OpenProject or CommunityServer more popular?
OpenProject has 16,933 GitHub stars and CommunityServer has 3,176. OpenProject has the larger community by that measure.
Are OpenProject and CommunityServer free?
Both are open source. OpenProject is licensed under GPL-3.0 and CommunityServer under Apache-2.0. Neither carries a licence fee.
What is the difference between OpenProject and CommunityServer?
OpenProject is written in Ruby and CommunityServer in C#. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, OpenProject or CommunityServer?
Choose OpenProject if you want the larger community (16,933 stars) or its GPL-3.0 licence terms. Choose CommunityServer if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.