Hands-on Open Source Challenges
Real-world scenarios using tools like OpenTelemetry, Argo CD, OpenTofu, GitHub Actions, and more. Everything runs in your browser, no local setup required.
Choose Your Adventure
Echoes Lost in Orbit
Restore interstellar communications by fixing broken GitOps setups, progressive delivery systems, and observability pipelines across three galactic missions.
Building CloudHaven
Join the Infrastructure Guild and modernize CloudHaven's infrastructure from manual provisioning to a self-service platform using Infrastructure as Code.
The AI Observatory
Investigate a mysterious bandwidth anomaly at a remote research station by instrumenting its AI system with OpenTelemetry.
Start Curious.Break Things.Learn Together.Glow Brighter.
Some species of fireflies synchronize their flashing. Thousands of individuals, each emitting their own signal, collectively producing something far more powerful than any single light source could alone.
That's OffOn. You bring your questions, your fixes, your ideas. We bring the challenges, the tooling, and the practitioners who care about the same problems you do.
Every spark starts with one person. Together, we illuminate the whole open source ecosystem.
Always On. Always Open. Always Learning.