Catrobat Festival 2021

September 25-26 | Graz, Austria

Catrobat celebrates its 11th anniversary!

Following the Catrobat Computational Thinking Conference 2021, Catrobat celebrates its 11th anniversary with a two-day online and on-site festival for contributors and users of the Catrobat community. The on-site part of the festival takes place in Graz, Austria, Europe on the weekend of 25th and 26th September 2021.

We are looking forward to celebrating 11 years of Catrobat together with you! Whether you are an active or former contributor of our FLOSS community, a user of Pocket Code or our other apps, or solely interested in visual programming languages, the Catrobat Festival is an event you cannot miss!


Attendance is free but a registration is necessary.


Graz is the capital city of the Austrian state Styria and the second-largest city in Austria. Graz is known as a university city, having four universities and more than 60.000 students. Its historic centre is one of the best-preserved city centres in Central Europe.

The festival takes place in several locations at Graz University of Technology, at Inffeldgasse 18, 8010 Graz.

Image taken from



Take part in our international Online Game Jam!​


Guest talk: Code the change you want to see – It’s time to find out why collaboration is the key

Matthias Müller, Dominik Augustin (Dynatrace)

Do you think that collaboration and sharing code with others can be the key to excellent solutions? Then we say that’s true! It’s not working alone in a cellar (maybe on your own project – never showing results, never talking with anyone about it) that makes you successful. And this is valid not only in open source projects but also in the industry.

To innovate and create outstanding software, it’s important to understand a problem instead of purely focusing on a solution, and for this collaboration is extremely important. Yes, the more you open your development – the more people you will find who feel the same pain, and who might help you to find the best way to solve it – the better. That’s why we will show you how Dynatrace benefits from shared code ownership and open culture.

Transport to the dinner will be provided. A private bus will depart at Inffeldgasse 18 (return journey included). Important: registration necessary! Please choose the proper tickets at the registration.


If you have any questions, please contact us via


An unconference is a participant-driven space for conversations, discussions, collaboration, creativity and knowledge transfer. At the Catrobat Festival there will be up to 18 sessions where you have the chance to exchange ideas with like-minded people. One session lasts up to 30 minutes (but can also be shorter or even a little bit longer), whereas there will be three sessions in parallel. For the exact times, have a look at our festival schedule. Every festival attendee is invited to the sessions they find most interesting. The most crucial part is that all attendees will also have the opportunity to suggest unconference sessions dealing with one of their favourite topics! All sessions are welcome.


Examples for a session:

  • Group discussion

  • Question: you have a problem and you think others in the peer-group can help you answering your question

  • Short presentation followed by a discussion

  • Demo: show others a cool project or tool that you like

Most importantly, an unconference session should be interactive, the discussion as well as the exact direction of the session automatically evolves over time and should not be prepared in advance. Find out more information about attending an unconference at


Interested in hosting a session?

No matter if you like to give a short demo of a cool project of yours or some great achievements of your Catrobat team, like to start a discussion, want to show others a great new technology or simply want to ask other field experts a question — all sessions are welcome! A session is over whenever there is nothing else to say, the only limit is the upper limit of 30-40 minutes. If your session ends after 15 minutes, that’s fine — just leave the room and get yourself a cup of coffee or a cold refreshment beverage. Due to the current circumstances and room limitations a session consists of a maximum of 20 people.


Tip: you can also host a session together with a colleague who may also be interested in the same topic.


Examples for a discussion topic: challenges and problems at Catrobat, inter and intra team communication, best practices, improving the development process, process improvements, onboarding, mentoring, code reviews, project roles and work distribution, pull request merging, improving diversity

Think about the sessions you wish to propose (up to 2 per person) and go ahead and submit them at the session proposal form.

Catrobat Computational Thinking Conference 2021

Are you a researcher or field expert? Don’t miss the Catrobat Computational Thinking Conference (CCTC’21) which takes place online on 24th September 2021 (separate registration necessary).


Graz University of Technology is one of five universities in Styria, Austria. It was founded in 1811 by Archduke John of Austria and comprises seven faculties. The university has more than 13,000 students, and approximately 2,000 students graduate every year.


We are a passionate and open-minded group of software enthusiasts, and together, we are global market leader in software intelligence. By providing actionable data on how applications are performing in real-time—for example, crash reporting, server-side tracking, root-cause analysis to name a few—our full-stack monitoring platform helps our customers anticipate and resolve their software issues. We have made it our mission to ensure that millions of people worldwide have an excellent user experience, made possible through a unique combination of observability, automation, and AI—all compacted into one cloud-based software intelligence platform.


We’re a team of 80 digital enthusiasts based in Austria with projects as far as Silicon Valley. Since 2007, we help innovative companies to build, improve and scale digital products and turn legacy platforms into next-generation solutions. Our cross-functional teams turn visions into digital reality. We’ve got the right people, with the right experience, who love working together. That’s what sets us apart.


Interested in supporting the Catrobat Festival?

Support the Catrobat Festival 2021 and become a partner! Contact us at