GNU ccAudio2 is a stand-alone portable C++ class FrameWork for manipulating audio data. It has existed for some time as GNU GPL licensed package and has most recently been designated a GNU package. It is commonly used in GNU Bayonne.
GNU ccScript is a C++ class FrameWork for creating a virtual machine execution system for use with and as a scripting/assembler language for state-transition driven realtime systems. The most common example of this is as the core of the scripting engine found in GNU Bayonne.
GNU Common C++ is a very portable and highly optimized class FrameWork for writing C++ applications that need to use threads and support concurrent sychronization, and that use sockets, XML parsing, object serialization, thread-optimized String and data structure classes, etc. This FrameWork offers a class foundation that hides platform differences from your C++ application so that you need not write platform specific code. GNU Common C++ has been ported to compile nativily on most platforms which support either posix threads, or on maybe be used with Debian hosted mingw32 to build native threading applications for Microsoft Windows.