Colanode vs Citadel
A side-by-side comparison of two self-hosted groupware options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Colanode
Collaboration suite with real-time messaging, rich text pages, file
VS
Citadel
All-in-one groupware, mail and collaboration server
| Feature | Colanode | Citadel |
|---|---|---|
| Category | Groupware | Groupware |
| License | Apache-2.0 | GPL-3.0 |
| Language | TypeScript | C |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 512 MB |
| Deployment | docker, kubernetes | bare-metal, source |
| GitHub stars | ★ 5,006 | ★ 100 |
| First released | 2026 | 1987 |
| Replaces | — | Microsoft Exchange, Microsoft 365 |
Why pick each one
Choose Colanode if…
- Released under the Apache-2.0 license
- First-class Docker support for quick deployment
- Kubernetes-ready with Helm charts available
- Mature project with 5k GitHub stars
Frequently asked questions
Is Colanode or Citadel better?
Neither is universally better. Colanode has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Colanode and Citadel free and open-source?
Yes. Colanode is licensed under Apache-2.0 and Citadel under GPL-3.0. Both can be self-hosted at no software cost.
Can I run Colanode and Citadel with Docker?
Colanode: yes. Citadel: check the project docs for container support.