OSEM
A web-based event management tool designed for Free and Open Source Software conferences. Handles submissions, scheduling, and registrations.
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Open-source event manager built for FOSS conferences, self-hosted and fully customizable.
Core Features
- Call for papers and talk submission
- Review system and automated scheduling
- Attendee registration and ticket management
- Customizable conference themes and agenda
- Libera.Chat IRC integration
What It Can't Do
- •Requires familiarity with Ruby/Rails and PostgreSQL setup. No built-in payment gateway; best suited for free conferences.
Use Cases
- Organizing local or global open-source conferences
- Community hackathons or workshops
- Non-commercial events requiring self-hosting and data sovereignty
Detailed Introduction
OSEM (Open Source Event Manager) is a web-based application built with Ruby on Rails, designed specifically for organizing Free and Open Source Software (FOSS) conferences. It provides a complete workflow: call for papers, talk submission and review, schedule creation, registration, and attendee management. Unlike commercial platforms like Eventbrite, OSEM is fully open-source, self-hosted, and customizable to fit any FOSS event. It integrates with Libera.Chat IRC for community communication and features a demo site for trial. Ideal for small to medium-sized conferences that value transparency and community control.
Troubleshooting & FAQ (1)
TroubleshootingHow to fix 'LoadError: cannot load such file -- rubocop/rake_task' when building OSEM Docker image?
This error occurs during docker-compose build. A workaround is to bypass the build step by using pre-built images: first create a tmp directory with sticky bit and full permissions, then run docker-compose up -d. Commands:
cd osem
mkdir tmp
chmod 1777 tmp/
docker-compose up -dThe tmp directory fix also prevents permission errors like 'Permission denied @ dir_s_mkdir' for /osem/tmp/cache/assets. If you need to build locally, edit lib/tasks/rubocop.rake to remove the require 'rubocop/rake_task' line or add rubocop to your Gemfile.
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Getting Started
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Install the software
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Step 1: Install Ruby, Rails, and PostgreSQL
Step 2: Clone the repository and configure database
Step 3: Run bundle install and database migrations
- Step 1: Install Ruby, Rails, and PostgreSQL
- Step 2: Clone the repository and configure database
- Step 3: Run bundle install and database migrations
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Open Source Transparency
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Delete the project directory and drop the PostgreSQL database to uninstall.
No Extra Dependencies
Ready to use after download. No additional runtime required.
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