Linux

OverTheWire offers online and offline wargames for learning and practicing computer security.

EverythingMoe publishes software reviews spanning mobile platforms, desktop systems, anime, manga, and light novels.

Final2x provides image super-resolution on Windows, macOS, and Linux, with options to use built-in or custom models.

Manage keyboard behavior across GNU/Linux, Windows, and macOS with KMonad, a keyboard manager.

Standard Notes is an end-to-end encrypted note-taking app for capturing notes and files, according to its repository description.

Play Clone Hero, an instrument-based rhythm game that supports guitar controllers, MIDI drums, gamepads, and keyboards.

This open-source Linux distribution is designed for smartwatch devices.

A Headless Steam Docker image supporting NVIDIA GPU and accessible via Web UI

Husi provides a multiplatform proxy toolset organized around proxy sets.

Plucky filters internet content to help people avoid distractions that conflict with their longer-term goals.

RepoHub provides a unified interface for discovering and installing software from official repositories across Linux, Windows, and macOS.

Resolve DNS queries with DNS.SB, which supports DNS over HTTPS and DNS over TLS.

Choose emoji from the command-line launcher with this Rofi plugin, which adds an emoji selector to Rofi.

HammerAI offers a desktop app for chatting with AI characters offline using locally run models.

Forge adds window tiling and management controls to the GNOME Shell desktop.

Capture and save screenshots with Flameshot, a cross-platform tool that includes built-in screenshot features.

Inspect iOS and macOS applications with Malimite, a decompiler project hosted on GitHub.

Use IceCubesApp to connect to a Mastodon instance, browse timelines, interact with users, and post through a SwiftUI client.

Lyricify provides scrolling lyrics for Spotify and other apps, with versions for Windows and mobile platforms.

ScreenPlay provides live wallpapers, widgets, and screensavers through an open-source app for Windows and macOS.

Techlore VPN Finder compares 52 providers across privacy practices, jurisdiction, audits, logging policies, and technical specifications.

Encode videos with FastFlix, a free desktop interface for H.264, HEVC and AV1 hardware or software encoders.

For stenography on a computer, Plover provides an open-source desktop stenotype application.

Explore a Commodore 64 database covering games, music, emulation tools, frontends, reviews, and articles.