IUP Portable User Interface Alternatives

Powerful, flexible and easy to use, Qt will help you not only meet your tight deadline, but also reduce the maintainable code by an astonishing percentage.

GTK+ is a multi-platform toolkit for creating graphical user interfaces.

wxWidgets: Cross-Platform GUI Library

Fast Light Toolkit - Fast Light Toolkit (FLTK)

Riverbank | Software | PyQt | What is PyQt?

wxPython is a GUI toolkit for the Python programming language.

Open-source, resolution independent GUI library in C++

Open source Python framework for rapid development of applications that make use of innovative user interfaces, such as multi-touch apps. Installation on WindowsInstallation on Windows. Installation; What are wheels .

FMOD is a proprietary audio library that plays music files of diverse formats on many different...

PortAudio is a cross platform, open-source, audio I/O library.

Build cross platform desktop apps with web technologies

JUCE is a wide-ranging C++ class library for building rich cross-platform applications and plugins...

RtAudio is a set of C++ classes that provide a common API for realtime audio input/output across...