Linux

Distrobox runs Linux distributions inside containers and provides documentation and downloads.

Flying Carpet transfers files between Android, iOS, Linux, macOS, and Windows over ad hoc Wi-Fi without network infrastructure.

Nitrox enables multiplayer for Subnautica through a free modification for the underwater survival game.

Playit.gg lets users host game servers on their own computers and invite friends to connect.

Caesium Image Compressor compresses JPG, PNG, WebP, and TIFF pictures for storage, sending, and sharing.

For web and video, Friction supports vector and raster animation through its motion graphics application.

Polari supports Internet Relay Chat and is designed to integrate with GNOME.

CrossPaste synchronizes clipboard content across macOS, Windows, and Linux using end-to-end encryption and LAN connections.

Wings3D provides subdivision-based 3D modeling, with source code and build instructions available in its repository.

dodo provides a graphical email client built on notmuch, with its project describing the client as hackable.

Team XLink makes XLink Kai, a service for connecting game consoles over the internet as if they shared a local network.

NeoHtop monitors processes, CPU, and memory usage in real time through a desktop system monitor.

GnuCash is personal and small-business accounting software available for Linux, BSD, Solaris, macOS, and Windows under the GNU GPL.

Draw Things generates AI art offline on Apple devices, according to its App Store listing.

keyd runs as a Linux daemon for remapping keyboard keys and defining custom key behavior.

Sharing sends files, directories, and clipboard text from a command line to iOS and Android devices.

Watt Toolkit is an open source cross-platform toolbox for Steam, with most features requiring Steam to be installed.

Conky configuration uses variables and settings to display elements such as text, bars, and graphs.

EasyEffects provides PipeWire audio processing plugins, including a limiter, compressor, convolver, equalizer, and auto-volume controls.

Create Wine-wrapped ports of Windows software for macOS using the Sikarugir tool.

redroid runs Android in a multi-architecture cloud environment with GPU support, according to its documentation.

NoxPlayer runs Android apps and mobile games on PC and Mac, according to its product page.

Jan Lope provides Toki Pona lessons and dictionary content for the constructed language.

Create decrypted disc dumps from PlayStation 3 game discs with this utility.