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ossia score is asequencer for audio-visual artists, designed to createinteractive shows.

SequenceOSC, MIDI, DMX, sound, video and more, between multiple software and hardware. Createinteractive andintermedia scores,script andlive-code with JavaScript,ISF Shaders,Faust, PureData or C++. Leverage IoT protocols such as CoAP or MQTT, interact with joysticks, Wiimotes, Leapmotions, Web APIs and BLE sensors and integrate programs from a wealth of creative programming languages such asStructure Synth,Context-Free Art andBytebeat. Load any kind of audio or video format and process visuals through Spout, Syphon, NDI, Shmdata or Sh4lt ; sonify large datasets with CSV and HDF5 support.

Free, open source and runs on desktop, mobile, web and embedded, down to Raspberry Pi Zero 2.

Read more onhttps://ossia.io, come ask questions on theforum or hang out in ourDiscord orMatrix room #ossia_score:gitter.im, we will be happy to help you !

Releases are available forWindows, Linux (via AppImage) and macOS.

• Windows: install and run.
• macOS: open the.dmg and dropossia score.app in Applications.
• Linux: make executable (right click -> permissions orchmod +x) and run the AppImage.

Platform	Status
AppImage
Flatpak
Nix
ArchLinux, SUSE, Fedora
Debian (Bookworm, Trixie)
Ubuntu (22.04, 24.04, 24.10)
Raspberry Pi (Bookworm AArch64)
macOS (M1 & Intel)
Windows (MSYS2, MSVC 2022)
FreeBSD
WebAssembly
Plug-in templates

ossia score usesCppDepend to ensure consistent code quality improvements ; please check it out !

In order to build score, follow thedocumentation.

When updating the score repository through the command line, don't forget to update the submodules, they change often.

cd scoregit pullgit submodule update --init --recursive

Some useful and easy potential contributions are listedon the website.

There are also many fixable areas in the code :

• TODO : for simple issues.
• FIXME : for critical bugs / problems.
• MOVEME : when something is not where it should be.
• REMOVEME : when something is redundant.
• RENAMEME : when the class does not match with the file it's in.
• OPTIMIZEME : when an easy-to-write-but-suboptimal algorithm is used.

Finally, one can write its own score plug-ins to add custom features to the software.An example plug-in with the most common classes reimplemented is providedhere.

This project exists thanks to all the people who contribute. [Contribute].

Become a financial contributor and help us sustain our community. [Contribute]

Support this project with your organization. Your logo will show up here with a link to your website. [Contribute]