JUCE is an open-source cross-platform C++ application framework, used for the development of desktop and mobile applications. JUCE is used in particular for its GUI and plug-ins libraries. It is dual licensed under the AGPLv3 and a commercial license.

The aim of JUCE is to allow software to be written such that the same source code will compile and run identically on Windows, macOS and Linux platforms. It supports various development environments and compilers.

JUCE resulted from a split-out of the underlying C++ code that was developed by Julian Storer to create Tracktion's (now Waveform) DAW graphic and audio capabilities. It was first released to the public in 2004.

JUCE and Raw Material Software were acquired in November 2014 by London-based hardware manufacturer ROLI for an undisclosed amount.

In April 2020 it was announced that JUCE had been sold by ROLI to PACE Anti-Piracy Inc..

JUCE is intended to be usable in exactly the same way on multiple platforms and compilers. Raw Material Software gives the following list of platforms and compilers on which support is officially confirmed; others may work, but have not been officially tested.

JUCE is supported on the following platforms.

JUCE is officially confirmed to work properly with the following compilers.