libcw

libcw is an application framework for developming real-time interactive applications on Linux.

Some of libcw's features are:

Real-time, low-latency, synchronous and asynchronous interfaces to many common IO devices including:
- Audio
- MIDI
- Serial
- Sockets
- Websockets
Built-in dataflow framework for describing real-time audio and DSP programs.
A GUI development API and collection of predefined widgets for creating websocket based user interfaces.
Most elements of the framework are configurable based on configuration files which use an extended JSON syntax.
The library has minimal dependencies. The only external dependencies are libasound, libwebsockets and libfftw.
The library implements a large collection of pre-built audio signal processing algorithms.