Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC).

DPDK is a set of libraries for fast packet processing. Applications run in user-space and communicate directly with dedicated network interfaces.

Soapy hardware drivers using the SoapySDR driver framework. Part of the main gnuradio build.

Some channel oriented processing blocks. These functions are also in gnuradio-core. Part of the main gnuradio build.