an open source, cross-platform, software development framework provided as C++ source code, that can be used to create standalone software on Windows, macOS, Linux, iOS and Android, as well as VST, VST3, AU, AUv3, AAX and LV2 plug-ins. - Home

It was designed around real-time audio and plugin development, not just generic desktop GUIs. - Juce vs the world

• used by helm synth