The Mobile Robot Programming Toolkit (MRPT) is an extensive, cross-platform, and open source C++ library aimed to help robotics researchers to design and implement algorithms in the fields of Simultaneous Localization and Mapping (SLAM), computer vision, and motion planning (obstacle avoidance).

Qt is a cross-platform C++ application framework. Qt's primary feature is its rich set of widgets that provide standard GUI functionality.

OSCAR (Open Source Chemistry Analysis Routines) is an open source extensible system for the automated annotation of chemistry in scientific articles. It can be used to identify chemical names, reaction names, ontology terms, enzymes and chemical prefixes and adjectives, and chemical data such as state, yield, IR, NMR and mass spectra and elemental analyses. In addition, where possible, any chemical names detected will be annotated with structures derived either by lookup, or name-to-structure parsing using OPSIN or with identifiers from the ChEBI (Chemical Entities of Biological Interest) ontology.

ANTIC is an Algebraic Number Theory library In C.

This package contains files common to all languages and libraries contained in the GNU Compiler Collection (GCC).

Steam (https://www.steampowered.com) is a software content delivery system developed by Valve software (https://www.valvesoftware.com). There is some free software available, but for the most part the content delivered is non-free.