osem

Event management tailored to free Software conferences.

GitHub stars
929
License
MIT
Latest release
v1.0
24 May 2016
Last commit
20 August 2026
Runs on
Ruby, Docker

Commits per month, last 12 months

169 commits

Replaces

Paid products osem can stand in for.

How to self-host osem

osem runs on Ruby and Docker. The project's own install guide is the place to start; most people put it on a small server with Docker and a reverse proxy for HTTPS.

  1. Get a server: a home server, a VPS, or a managed app host.
  2. Install it the way the project's docs describe, usually with Docker Compose.
  3. Put it behind HTTPS and set up backups before you add real data.
  4. Update it regularly. Watch the project's releases.

New to self-hosting? Start with the beginner's guide.

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Questions

Is osem free?

Yes. osem is open source under the MIT license, so you can use it without paying for a license. You pay only for the server it runs on.

Can I self-host osem?

Yes. osem runs on Ruby and Docker. Follow the install guide in the project's documentation, or use a host that installs it for you.

What does osem replace?

People use osem instead of Sessionize.

Is osem still maintained?

The last change to osem's code was on 20 August 2026, with 169 commits in the last 12 months.

Topics

Conference Management

App data from awesome-selfhosted (CC BY-SA 3.0), stars and activity from GitHub.