MuseScore thrives on developer contributions in the form of both contributed code and patches. Helping out in development helps the project move forward and stay competitive, and it is the best way to ensure that MuseScore can do what you need it to do on your next musical project!
Hosted on GitHub: MuseScore's source code and development hub (commits feed / RSS). The preferred way to contribute is via pull request (currently open PRs). Read our Git Workflow page to learn how to make a pull request. You need to sign the MuseScore CLA for your request to be merged.
Devs use GitHub Wiki and Developers' handbook: information including build/compile instructions for supported OSes.
Group chat on Discord.com
Development and Technology Preview forum
Documentation for the desktop editor on musescore.org
We rely heavily on the online community to assist us in creating and updating documentation, such as the Handbook, Tutorials, and How-to guides, see documentation page.
Mobile apps (Android, iOS), the musescore.org website, and the musescore.com website
Read How and where to ask for support to understand the Muse Group ownerships and MuseScore's open source model (wikipedia) first. Mobile apps (Android, iOS) and all of the web servers are closed source so direct coding contribution is not possible.
To suggest improvement for the musescore .org web interface, use musescore.org forums.
To suggest improvement for Muse Hub and Muse Sounds, visit https://musehub.zendesk.com/
MuseScore 3.x compatible soundfont, instruments and MIDI CC
Other ways to contribute
Visit contribution overview to find out all you can do to help MuseScore grow, such as proposing new design, translating, testing and bug reporting etc.