Citadel
Groupware including email, calendar/scheduling, address books, forums, mailing lists, IM, wiki and blog engines, RSS aggregation and more.
Developed outside the platforms our data source measures, so there is no activity history to score. This says nothing about the project — many unrated projects are actively maintained.
Activity data
Not available for this project. Our source collects commit history from GitHub only, and Citadel is developed elsewhere.
| Stars | not measured |
|---|---|
| Latest release | — |
| Repo updated | — |
| Licence | GPL-3.0 |
| Built with | C, Docker, Shell |
Is Citadel actively maintained?
We cannot measure this one. Citadel is developed outside the platforms our data source collects activity from, and its repository lives at www.citadel.org — so there is no commit history or release cadence here to score.
Read that as missing data, not as a warning. Several of the best-maintained projects in this catalogue are unrated for exactly this reason. To judge it, open the repository and look at the date of the most recent commit yourself.
What Citadel actually does
Citadel is a modular groupware suite designed to handle email, calendars, address books, and collaborative spaces like forums and wikis on your own infrastructure. It bundles multiple communication and information-sharing tools into a single integrated server package. It is implemented using C, Docker, and shell scripts.
Best fit: Self-hosters looking for an all-in-one collaborative workspace suite rather than maintaining separate standalone applications for email, calendars, and messaging.
Worth knowing: The project lacks recent tagged releases and verifiable activity metrics, meaning you should carefully evaluate its long-term stability and security maintenance before committing critical data.
Deployment notes
Because it runs via Docker, you will typically need to configure persistent volumes for your stored data and place a reverse proxy in front of the container to handle TLS termination.
Links
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