This is the GNU Objective-C compiler, which compiles Objective-C on platforms supported by the gcc compiler.

ZArchive is yet another file archive format. Think of zip, tar, 7z, etc. but with the requirement of allowing random-access reads and supporting Zstandard compression.

A program that computes structure factors |F^2| for neutrons, x-rays, and electrons from CIF/CFL/SHX/PCR crystallographic descriptions. This is useful to compute the diffraction pattern from materials.

Library of Daubechies wavelet function blocks. wvps computes the Wavelet Power Spectrum from a set of wavelet coefficients.

Library for handling SDL (Simple DirectMedia Layer) video data. Implements input and output blocks. Part of the main gnuradio build.

Library for trellis coding modulation, including the Viterbi Algorithm, Concatenated Coding and Turbo Decoding based upon finite state machine (FSM) class. Part of the main gnuradio build.