osem

The premium Open Source alternative to Eventbrite

🎯 Best for:Community-led conferences requiring a specialized Call for Papers workflow.

What is osem?

A self-hosted alternative to Eventbrite tailored specifically for the unique needs of open-source summits and community meetups. Manages the entire lifecycle including Call for Papers (CfP), registration, scheduling, and venue logistics.

Tech Stack
RubyCommunity & Events

Why osem?

  • Integrated CfP and scheduling
  • Multi-event support
  • Customizable registration forms

Limitations

  • Requires Ruby on Rails hosting
  • UI feels dated
  • Limited payment gateway integrations
3/3/2026
Last Update
500
Forks
239
Issues
MIT
License
Financial Leak Detected

Stop the "SaaS Tax"

Your team could be burning cash. Switching to osem instantly boosts your runway.

Competitor Cost
-$1,440
/ year (est. based on Eventbrite)
Self-Hosted
$0
/ year
Team Size10 Users
150+
SAVE 100%

Community Discussion

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