Free software projects

KDE is an international free software community that develops free and open-source software. As a central development hub, it provides tools and resources that enable collaborative work on its projects. Its products include the KDE Plasma graphical shell, KDE Frameworks, and the KDE Gear range of applications including Kate, digiKam, and Krita. Many KDE applications are cross-platform and can run on Unix and Unix-like operating systems as well as Microsoft Windows. KDE is legally represented by KDE e.V. based in Germany, which also owns the KDE trademarks and funds the project.

memory-safe programming language without garbage collection

Kotlin () is a cross-platform, statically typed, general-purpose high-level programming language with type inference. Kotlin is designed to interoperate fully with Java, and the Java virtual machine (JVM) version of Kotlin's standard library depends on the Java Class Library. However, type inference allows for more concise syntax. Kotlin mainly targets the JVM, but also compiles to JavaScript (e.g., for frontend web applications using React) or native code via LLVM (e.g., for native iOS apps sharing business logic with Android apps). JetBrains bears language development costs, while the Kotlin

programming language

high-performance dynamic programming language

CoffeeScript is a programming language that compiles to JavaScript. It adds syntactic sugar inspired by Ruby, Python, and Haskell in an effort to enhance JavaScript's brevity and readability. Some added features include list comprehension and destructuring assignment.

thumb|upright=0.5|62px|Common logo for all VideoLAN projects

Falkon (formerly QupZilla) is a free and open-source web browser developed by KDE. It is built on the QtWebEngine, which is a wrapper for the Chromium browser core.

HandBrake is a free and open-source transcoder for digital video files. It was originally developed in 2003 by Eric Petit to make ripping DVDs to a data storage device easier. HandBrake's backend contains comparatively little original code; the program is an integration of many third-party audio and video libraries, both codecs (such as FFmpeg, x264, and x265) and other components such as video deinterlacers (referred to as "filters"). These are collected in such a manner to make their use more effective and accessible (e.g., so that a user does not have to transcode a video's audio and visual

IRC network operated by Swedish nonprofit Libera Chat

PPSSPP (an acronym for "PlayStation Portable Simulator Suitable for Playing Portably") is a free and open-source PSP emulator for Windows, macOS, Linux, iOS, Android, Nintendo Wii U, Nintendo Switch, BlackBerry 10, MeeGo, Pandora, Xbox Series X/S and Symbian with a focus on speed and portability. It was released to the public on November 1, 2012, licensed under the GNU GPLv2 or later. The PPSSPP project was created by Henrik Rydgård, one of the co-founders of the Dolphin emulator.

iPodLinux is a μClinux-based Linux distribution designed specifically to run on Apple Inc.'s iPod. When the iPodLinux kernel is booted it takes the place of Apple's iPod operating system and automatically loads Podzilla, an alternative GUI and launcher for a number of additional included programs such as a video player, an image viewer, a command line shell, games, emulators for video game consoles, programming demos, and other experimental or occasionally unfinished software.

RPCS3 is a free and open-source emulator and debugger for the Sony PlayStation 3 that runs on Windows, Linux, FreeBSD and macOS operating systems, allowing PlayStation 3 games and software to be played and debugged on a personal computer. It is in active development, targeting x86-64 and ARM64 CPUs featuring OpenGL and Vulkan as backend renderers.

Rockbox is a free and open-source software replacement for the OEM firmware in various forms of digital audio players (DAPs) with an original kernel. It offers an alternative to the player's operating system, in many cases without removing the original firmware, which provides a plug-in architecture for adding various enhancements and functions. Enhancements include personal digital assistant (PDA) functions, applications, utilities, and games. Rockbox can also retrofit video playback functions on players first released in mid-2000. Rockbox includes a voice-driven user-interface suitable for o

LimeSurvey (formerly PHPSurveyor) is a free and open source online statistical survey web app written in PHP using a MySQL, SQLite, PostgreSQL or MSSQL database, distributed under the GNU General Public License. Its web interface enables users to develop and publish online surveys, collect responses, review statistics, and export the resulting data to other applications.

approach to version control

library

thumb|300px|GLX and AIGLX versus direct rendering. thumb|Compiz running on Fedora Core 6 with AIGLX. Accelerated Indirect GLX ("AIGLX") is an open source project founded by Red Hat and the Fedora community, led by Kristian Høgsberg, to allow accelerated indirect GLX rendering capabilities to the X.Org Server and DRI drivers. This allows remote X clients to get fully hardware accelerated rendering over the GLX protocol; coincidentally, this development was required for OpenGL compositing window managers to function with hardware acceleration.

KNIME (), the Konstanz Information Miner, is a data analytics, reporting and integrating platform. KNIME integrates various components for machine learning and data mining through its modular data pipelining "Building Blocks of Analytics" concept. A graphical user interface and use of Java Database Connectivity (JDBC) allows assembly of nodes blending different data sources, including preprocessing (extract, transform, load (ETL)), for modeling, data analysis and visualization with minimal, or no, programming. It is free and open-source software released under a GNU General Public License.

thumb|right|Single high-brightness Light-emitting diode|LED with a cheap [[loupe lens creates a bright narrow beam that can stream DVD-quality video over neighbourhoods. The red beam is invisible when observed outside of its unobstructed path.]] thumb|Twibright Ronja with diameter lenses, operating on a link using visible red light, max. range , with HPWT-BD00-E4000 transmitter LED. Installed on a rooftop, with its user posing to the right, in Czech Republic. thumb|right|Three bolts preloaded with pink rubber blocks facilitate fine adjustment of the optical head direction with a gear ratio 1:3

Nuvola is a free software icon set under the GNU LGPL 2.1 license, created by David Vignoni. Originally created for desktop environments like KDE and GNOME, it is also available in packages for Windows and Mac. The final version, 1.0, contains almost 600 icons. The default set is in the PNG graphics format; an SVG version is also available.

C++ template library for Win32 development

open source audio player

workflow system in biology

Windows Installer XML Toolset (WiX, pronounced "wicks") is a free software toolset that builds Windows Installer packages from XML. It consists of a command-line environment that developers may integrate into their build processes to build MSI and MSM packages. WiX was the first Microsoft project to be released under an open-source license, the Common Public License. It was also the first Microsoft project to be hosted on an external website.

suckless.org is a free software community of programmers working on projects with a focus on minimalism, simplicity, clarity, and frugality. The group developed the dwm and wmii window managers, surf, tabbed, and other programs that are said to adhere strictly to the Unix philosophy of "doing one thing and doing it well". The development team follows the "Worse is better" principle and adheres to the KISS principle ("Keep it simple, stupid").

A simple text editor for the Xfce desktop environment

data-processing architecture

IPv6 & IPsec stack for BSD derivatives

text analysis software

OpenCPN (Open Chart Plotter Navigator) is a free software maritime chart plotter and navigation software for use underway or as a planning tool. Developed by a team of active sailors and tested in real world conditions, it has multiple supported chart formats and a variety of data inputs.

public kiosk which burn copies of free software onto user-provided CDs and DVDs

free software

open-source 3D robotics simulator

programming language

QtWeb is a discontinued free and open-source web browser developed by LogicWare & LSoft Technologies. QtWeb used the WebKit browser engine that was embedded in the Qt framework.

programming language