⚠️ New here?
If you haven’t heard about Catrobat, what we do, or how you can contribute, start with our
step-by-step guide.
💡 If any step in the following process is unclear, misleading, or incorrect, feel free to open a pull request with improvements.
Catroweb
Catroweb is the name of the Pocket Code sharing platform, where our community uploads and shares projects.
If you uploaded your game in a previous step, it should already be visible to other users.
They can download and remix your masterpiece, while the platform also provides features typical of a social network.
You can find our API specifications here:
👉 https://developer.catrobat.org/Catroweb/
Services
Public production services that make up the Catroweb platform:
Live service health is on the Better Stack status page (also linked via the badge at the top).
Team Culture
We work as a team and expect everyone to follow shared rules and best practices to ensure high-quality code.
We support each other, but also expect newcomers to proactively familiarize themselves with our coding principles.
Focus on, Test-Driven Development, Clean Code and quality Code Reviews.
Technologies
Below is an overview of the main technologies used in Catroweb.
Your tech stack should cover most of them — but don’t worry if something is new. You can learn along the way (The web is your friend 😉).
Languages
Tooling & Infrastructure (IDE, Version Control, Issue Tracking, ...)
Communication
Start Contribution
If you feel confident that your tech stack matches our requirements, we invite you to start contributing 🎉
👉 .github/onboarding.md
Documentation
Core project docs are maintained in-repo:
The recommended Docker setup includes Node 22 and Yarn 4.12.0 for frontend builds.
Operations & Infrastructure
Production deployment configuration for the Catrobat ecosystem (web platform infra, monitoring stacks, reverse proxy, CI/CD) is maintained in the private companion repo Catrobat/infrastructure.
Open-source-friendly operations docs live in docs/operations/.
Issues
Found a bug?
⚠️ Is this a Pocket Code or Pocket Paint Android app bug?
Please report app crashes, memory issues, or physics glitches in the Catroid repository:
👉 https://github.com/Catrobat/Catroid/issues
For Catroweb (Web Platform) bugs:
- Please check the existing issues first to avoid duplicates:
👉 https://github.com/Catrobat/Catroweb/issues
- If it hasn’t been reported yet, open a new issue using the bug report template:
👉 https://github.com/Catrobat/Catroweb/issues/new/choose
Note on Scratch2Catrobat: The Scratch to Catrobat converter is currently unmaintained and abandoned. Feature requests or bug reports related to converting Scratch projects will not be addressed at this time.
