ABOUT JUCE

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.
The aim of JUCE is to allow software to be written such that the same source code will compile and run identically on Windows, Mac OS X and Linux platforms. It supports various development environments and compilers, such as GCC, Xcode, and Visual Studio.

JUCE 4.2 GRAPEFRUIT WAS RELEASED.

Release notes:

Fixed Projucer live coding engine on OS X (solving the issue "symbol not found")
Fixed AAX plug-ins not loading in Pro Tools on OS X
Fixed AudioUnit plug-ins not loading with hosts requiring Carbon support, e.g. Ableton Live 9.1
Fixed Android Studio export, which was broken in the new 4.2 module system
Replaced shared code framework with statically linked code on OS X (improves audio plug-in compatibility with copy protection schemes and other systems)
Significantly reduced audio plug-in binary sizes on OS X
Added feature to strip all symbols from the binaries on OS X, providing better security for closed-source audio plug-ins
Improved the way JUCE module files are added to projects
Fixed various other Projucer bugs
Fixed various bugs related to VST plug-ins hosting on Windows and Linux
Added new class CachedValue, providing easy and efficient access to ValueTree properties.