The libt3widget library provides a C++ dialog toolkit. It provides objects for dialogs and widgets like buttons, text fields, check boxes etc., to facilitate easy construction of dialog based programs for Un*x terminals.

libtar allows programs to create, extract and test tar archives. It supports both the strict POSIX tar format and many of the commonly-used GNU extensions.

TAD is a Javascript test suite that allow writing tests with minimal hassle. It locates test file and provide tested module for test functions.

LibTorrent is a BitTorrent library written in C++ for *nix. It is designed to avoid redundant copying and storing of data that other clients and libraries suffer from.

deal.II is a C++ program library targeted at the computational solution of partial differential equations using adaptive finite elements. It uses state-of-the-art programming techniques to offer you a modern interface to the complex data structures and algorithms required.

Chemistry::Ring provides some basic methods for representing a ring. A ring is a subclass of molecule, because it has atoms and bonds. Besides that, it has some useful geometric methods for finding the centroid and the ring plane, and methods for aromaticity detection.