Last updated: 2 August 2026
Jelly Jammer is built with the help of open-source software and fonts created by other people. We're grateful for their work, and we list it here along with the licences it's shared under.
In short: all of the components below are used under permissive open-source licences that allow their use in an app like this. Each licence text is available at the linked source.
A Flutter audio plugin that powers the sounds in Jelly Jammer. We use a fork that adds a native Android audio backend. View licence and source.
An audio plug-in framework used within the audio engine to generate and process sound. View licence and source.
Google's low-latency audio library, used by the audio engine to play sound on Android. View licence and source.
Realtime audio input/output classes by Gary P. Scavone, used by the audio engine to play sound on Windows and macOS. View licence and source.
Realtime MIDI input/output classes by Gary P. Scavone, built alongside RtAudio in the desktop audio engine. View licence and source.
The framework Jelly Jammer is built on. View licence.
State management for the app. View licence.
A set of icons used in the interface. View licence.
Browser API bindings for the web build. View licence.
IndexedDB-style storage used to save your work in the browser. View licence.
Stores simple settings on your device. View licence.
Finds the right place to save files on your device. View licence.
Lets you share songs using your device's share options. View licence.
Reads the app's version information. View licence.
Opens links such as this page in your browser. View licence.
Shows the system dialog for saving files. View licence.
Shows the system dialog for opening songs on desktop. View licence.
Lets Jelly Jammer open song files shared from other apps. View licence.
Compresses and reads the song files Jelly Jammer saves and shares. View licence.
The rounded display font used in the Jelly Jammer brand and headings. View licence.
The body font used on these web pages. View licence.
The impulse response behind the built-in “Garage Studio” studio filter, by djericmark, released into the public domain. View source.
The full text of each licence is available at the source links above. If you spot something we've missed, please let us know so we can credit it properly.