JUCE is an open-source cross-platform C++ application framework for desktop and mobile applications, including VST, VST3, AU, AUv3, LV2 and AAX audio plug-ins.

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RmlUi - The HTML/CSS User Interface library evolved

A modern C++ MIDI 1 / MIDI 2 real-time & file I/O library. Supports Windows, macOS, Linux and WebMIDI.

OpenFX effects API

C++ polyphonic pitch/time library (GitHub mirror)

icon toolkit for audio developers

Standard Music Font Layout

Guido project - music score layout engine - music description language

A C++ library for rendering, editing and playing back music scores.

Plug and play component to display LED meters for JUCE audio buffers

Belle, Bonne, Sage — music notation

Plot library for the JUCE Framework

A DSP Testbench for users of the JUCE framework

Fully resizing juce peak meter module with optional fader overlay.

Read/write/display videos into JUCE using ffmpeg

Build of llvm