Linux

The Hitch proxy handles TLS connections for Varnish and is described by its project as open source.

Create music on Windows, macOS and Linux with LMMS, a free open-source digital audio workstation.

Lokus supports personal knowledge management on macOS, Windows, and Linux with Markdown, wiki links, graph view, and an infinite canvas.

Find documents with DocFetcher, a desktop search application whose site also lists a commercial Pro edition.

Share terminal sessions in a browser with sshx, including chat and movable windows on a collaborative canvas.

Use OpenVPN for secure business access and remote work, with self-hosted or cloud-managed options.

Monitor network activity by process in a terminal with RustNet, which includes packet inspection.

FontBase manages font collections, with options for teams and font licensing information listed on its site.

itch.io web games lists browser-playable titles on itch.io, including games and entries from game jams.

For Minecraft Java Edition, Legacy Launcher provides a free, customizable launcher with downloads for multiple systems.

Create open-source fighting games with Ikemen GO, an engine that supports M.U.G.E.N resources.

FeedFlow is an RSS reader available for Android, iOS, macOS, Windows, and Linux.

Create streamer workflows with MacroGraph, a visual programming tool for streamers.

Puppetry records, manages, and runs codeless end-to-end tests for web applications on Windows, macOS, and Linux.

Bubblewrap provides low-level, unprivileged sandboxing for Flatpak and similar software projects.

Picturama organizes local image files without uploading them and supports multiple photo formats.

Gradia prepares screenshots for sharing, with the project describing the goal as making screenshots ready for an audience.

PyGPT provides an open-source desktop AI assistant for chat, agent building, and retrieval-augmented knowledge access.

EtchDroid writes operating-system images to USB drives on Android without requiring root access.

AdGuard VPN offers monthly free traffic and additional VPN service plans for protecting internet connections.

Configuration files and documentation from Just the Browser remove AI features, telemetry reporting, sponsored content, and product integrations from desktop browsers.

Lima launches Linux virtual machines with automatic file sharing, according to its project page.

AndroidMic turns an Android phone into a microphone for a computer and lists support for Linux, Windows, and macOS.

ImPlay offers cross-platform desktop media playback built on mpv and ImGui, with scripting and command-line options.