Linux

lsix displays thumbnails of image files in a terminal using Sixel graphics.

Customize command prompts across shells such as PowerShell, Bash, Zsh, and Fish with Oh My Posh.

Arch manual pages provides documentation for commands and utilities in Arch Linux.

EDuke32 provides an updated version of Duke Nukem 3D with modern features for supported systems.

cliamp plays music in a terminal and is described as inspired by Winamp.

Ikemen GO supports MUGEN-compatible content through an open source engine for customizable fighting games.

Xtreme Download Manager manages downloads and can save streaming videos, according to its site.

The FirefoxCSS Store is a community catalog for discovering and sharing Firefox userChrome.css themes.

Explore FragM, a project derived from Fragmentarium for creating and viewing graphics.

The KVM downloads page provides installation guidance and links for Linux distributions.

Use a desktop SEO utility with remote access, an MCP server and pricing details on its product site.

fx_cast is a Firefox extension that enables Chromecast support for casting web apps and HTML5 media, according to its project page.

OpenCVE tracks vulnerabilities, vendors, products, and weaknesses through searchable security records.

Add face-based authentication to Linux using Howdy, which works with built-in infrared emitters and cameras.

MicYou turns an Android phone into a PC microphone, supporting cross-platform audio transmission over Wi-Fi and USB.

Aria Maestosa is an open-source (GPL) MIDI sequencer/editor for composing, editing and playing MIDI files on Mac OS X, Windows and Linux/Unix.

Pitivi edits video on Linux, with its project page identifying it as free and open source.

Apply an open-source VHS and NTSC video effect in a standalone app or plugins for After Effects, Premiere and OpenFX.

RSS Guard is a feed reader, podcast player, basic XMPP client and Gemini protocol client. It supports RSS, ATOM, JSON and many web-based feed services.

FontForge provides a libre font editor with releases listed for Windows, macOS, and Linux.

Genymotion runs Android in the cloud or on PC and Mac, with integrations for testing frameworks and CI servers.

Learn to Cloud offers a free cloud engineering program with technical education, hands-on practice, and independent study.

C-based/Cached/Core Computer Vision Library, A Modern Computer Vision Library.

VYM creates tree-structured mind maps and includes a personal task manager.