22nd November 2025


One Day to Contribute to Open Source

Hosted by

About


We want to invite developers to hack together.
Let us support Free/Open Source projects by fixing issues and adding new features and most of all learn and have fun.

The event is open to every developer, regardless of their experience.
We plan to have introduction workshops at the beginning of the day.

Each contribution counts, regardless of its nature (design, documentation, code)!

Join us now

Venue


We are very proud and excited to bring the hack.commit.push event to Switzerland.

Thanks a lot to Hochschule Luzern for accommodating us!

Address
Hochschule Luzern · Suurstoffi 1, CH-6343 Rotkreuz
Closest stop
Rotkreuz

Agenda (time is local )


9:00 to 9:30

Introduction to the conference format and keynotes

9:30 to 9:45

Time to either pick a project or a 3-hour training and join a project afterwards!

9:45 to 12:45

Start your contributions or training

12:45 to 13:45

Lunch

13:45 to 17:00

Time to contribute again!

17:00 to 18:00

Listen to the recap, win one of the raffle prizes and stay for the Apero!

18:00 to 20:00

Apero

Trainings


There will be optional beginner-friendly trainings in the first two hours of the event. You can then work on one of the projects listed below afterwards.

Topic Trainer(s) Description

Projects


The following list of projects is being regularly updated. Bookmark it!

Name Tutorial Leads (+ spoken languages) Description
JReleaser Andres Almiray (EN, ES) JReleaser is a release automation tool. Its goal is to simplify creating releases and publishing artifacts to multiple package managers while providing customizable options.
Komunumo Marcus Fihlon (EN, DE) Komunumo is a platform for organizing events and communities - similar to Meetup or Mobilizon, but fully open source, self-hostable, and designed with a strong focus on privacy and federation. The application is built with Java using Vaadin Flow, Spring Boot, and jOOQ, and supports the ActivityPub protocol to enable communication between instances.
OpenJDK Mission Control Marcus Hirt (EN, SE) The Java (OpenJDK) tools suite for profiling and diagnostics.

Sponsors


You are interested in becoming a sponsor for hack.commit.push Switzerland?
Please send an email to Marcus Fihlon for more information.

Reach Out To The Organizers!