Desktop App GitHub Repositories (2026) · Open Source Tools

A music player for Android, Desktop and Web with cloud support.

A modding tool for osu!

Warteschlangensimulator is a free, platform independent, discrete-event, stochastic simulator which allows to model queueing systems in form of flowcharts.

Modern cross-platform Kubernetes GUI client built with Tauri and Rust

A cross-platform desktop application to complete Discord Quests automatically - supports video, stream, game and activity quests

Outlook on the Desktop (OotD)

Cross-platform desktop tool for analyzing Gradle and Kotlin Multiplatform projects, cleaning build folders, managing SDK resources, and optimizing development environments.

lightweight procedural motion tool for static 2D images and game assets

AI-driven intelligent clipboard turns scattered content across applications into a searchable, editable AI context. It features a clean, elegant interface with smooth animations and offers rich item management capabilities. Agents can process workspace items on demand. This is a companion productivity tool.

Unofficial cross-platform WhatsApp desktop client: link your phone natively (no server). Multi-account, scheduling, broadcasts, auto-reply, AI. macOS, Windows & Linux, built with Tauri

Your local document toolkit -> compress, resize, convert, and edit PDFs, images, and documents. Private, fast, offline.

Bongo cat OBS overlay & bongo cat keyboard plugin: bongo cat steam alternative, bongo cat game, bongo cat gif, bongo cat download pc, bongo cat github, github bongo cat, bongo cat v2, bongo cat plugin, Streamlabs, gamepad, Twitch, Windows Mac, under 1% CPU. ▼

Production-grade Chromium Embedded Framework (CEF) for Compose Multiplatform Desktop & Universal Java (Swing, JavaFX, SWT, AWT). Features pure Java2D OSR (zero JOGL), dual Kotlin/Java ergonomics, sub-pixel trackpad scrolling, HiDPI scaling, virtual app:// schemes, and WebRTC on Windows, macOS, & Linux.

A lightweight, high-efficiency desktop Agent assistant with multi-task parallel capability.

A multi-framework control library of https://github.com/microsoft/fluentui-system-icons

Claude Code session log viewer for JSONL files in ~/.claude/projects. Browse conversations, tool calls, tokens, and live tail sessions on desktop, web, and TUI.

DSL Framework consisting of a DSL Engine and a Data-Binding Library used in Glimmer DSL for SWT (JRuby Desktop Development GUI Framework), Glimmer DSL for Opal (Pure Ruby Web GUI), Glimmer DSL for LibUI (Prerequisite-Free Ruby Desktop Development GUI Library), Glimmer DSL for Tk (Ruby Tk Desktop Development GUI Library), Glimmer DSL for GTK (Ruby-GNOME Desktop Development GUI Library), Glimmer DSL for XML (& HTML), and Glimmer DSL for CSS

🔑 Free Offline-first Password Manager

Unofficial ChatGPT desktop app for Linux (formerly the Codex app), built locally from OpenAI’s official macOS app. Includes Chat, Work, and Codex. Packages for Debian/Ubuntu (.deb), Fedora/openSUSE (.rpm), Arch (pacman), Nix/NixOS, and AppImage, with Wayland and X11 support.