C software

PCMan File Manager (PCManFM) is a file manager application developed by Hong Jen Yee from Taiwan which is meant to be a replacement for Nautilus, Dolphin and Thunar.

FlexOS was a modular real-time multi-user multi-tasking operating system (RTOS) designed for computer-integrated manufacturing, laboratory, retail and financial markets.

Vega Strike is a first-person space trading and combat simulator, developed for Microsoft Windows, Linux, FreeBSD and OS X systems.

Star Wars Jedi Knight: Jedi Academy is a 2003 first- and third-person shooter action video game set in the Star Wars universe.

The Zend Engine is the open source scripting engine that interprets the PHP programming language.

id Tech 3, popularly known as the Quake III Arena engine, is a game engine developed by id Software for their video game Quake III Arena.

dcraw is an open-source computer program which is able to read numerous raw image formats, typically produced by high-end digital cameras.

Maple is a symbolic and numeric computing environment, and multi-paradigm programming language.

HipHop for PHP (HPHPc) is a discontinued PHP transpiler created by Facebook.

LV2, an acronym for Linux Audio Developer's Simple Plugin API (LADSPA) version 2, is an open standard for audio plug-ins and matching host applications.

PTGui is a panorama photo stitching program for Windows and Mac OS X developed by New House Internet Services BV.

PackageKit is a free and open-source suite of software applications designed to provide a consistent and high-level front end for a number of different package management systems.

Windows Phone 8.1, rolled out at Microsoft's Build Conference in San Francisco, California, on April 2, 2014, is the third generation of Microsoft's Windows Phone mobile operating system, succeeding Windows Phone 8.

GNOME Commander is a 'two panel' graphical file manager for GNOME.

gentoo is a free file manager for Linux and other Unix-like computer systems created by Emil Brink.

DirectFB (Direct Frame Buffer) is a software library with a small memory footprint that provides graphics acceleration, input device handling and abstraction layer, and integrated windowing system with support for translucent windows and multiple display layers on top of the Linux framebuffer without requiring any kernel modifications.

Qfusion is a 3D game engine.

mediaLib (from "multimedia library") is a portable low level library for accelerating multimedia applications, with interfaces in C.

awesome is a dynamic window manager for the X Window System developed in the C and Lua programming languages.

Sterling is a fractal-generating computer program written in the C programming language in 1999 for Microsoft Windows by Stephen C.

DADiSP (Data Analysis and Display, pronounced day-disp) is a numerical computing environment developed by DSP Development Corporation which allows one to display and manipulate data series, matrices and images with an interface similar to a spreadsheet.

Euler (now Euler Mathematical Toolbox or EuMathT) is a free and open-source numerical software package.

Fermat is a freeware program developed by Prof.

SWAD (originally stood for "Sistema Web de Apoyo a la Docencia" in Spanish or "Web System for Education Support", currently stands for "Shared Workspace At a Distance") is a web application to manage the courses, students and teachers of one or more educational institutions.

Stata is a general-purpose statistical software package created in 1985 by StataCorp.

SAS (Statistical Analysis System) is a software suite developed by SAS Institute for advanced analytics, multivariate analyses, business intelligence, data management, and predictive analytics.

pngcrush is a free and open source command-line utility for optimizing PNG image files.

MPSolve (Multiprecision Polynomial Solver) is a package for the approximation of the roots of a univariate polynomial.

Panoweaver is a panorama photo stitching program for Windows and Mac OS X developed by New House Internet Services BV.

MATLAB (matrix laboratory) is a multi-paradigm numerical computing environment and fourth-generation programming language.