Open Source Desktop Apps
Discover 162 open source Desktop App repositories from GitHub, each with an analysis of what it does, key features, use cases and alternatives. Desktop App projects here are most often combined with Cross Platform, TypeScript and Privacy. Last updated October 5, 2026.
162 repositories · updated October 5, 2026
httptoolkit: Inspect and Debug HTTP Traffic
HTTP Toolkit is a cross-platform tool for inspecting, rewriting, and mocking HTTP(S) traffic. It helps developers debug clients and services by capturing requests and responses, testing custom requests, and simulating endpoints.
simplex-chat: Private Messaging Without User Identifiers
SimpleX Chat is an end-to-end encrypted messaging platform designed to work without persistent user identifiers. It offers mobile and desktop apps, plus a terminal client, for people who want to reduce exposure of their contacts and messaging metadata.
ClipCascade: Sync Clipboard Content Across Devices
ClipCascade automatically syncs text, images, and files across desktop and Android devices. Choose a community server or self-host it, with server-based and peer-to-peer sync options.
Installer: Make Windows 11 More Consistent
Rectify11 Installer applies system-file modifications and other changes intended to make Windows 11 more visually consistent. The repository describes the V3 installer, but advises against using it because V4 is a complete rewrite.
QDoctor: Inspect Windows Systems for Rootkits and Threats
QDoctor is a Windows incident-response and anti-rootkit utility for examining system, process, kernel, network, and file activity. Responders can export structured host data for offline review or import it for investigation.
claude-code-by-agents: Coordinate Coding Agents in Shared Rooms
A native macOS app for coordinating Claude Code and other coding agents across local and remote machines. Route requests with @mentions and follow work in threaded rooms backed by OpenAgents workspaces.
ClickUi: A Desktop Assistant for Chatting with AI Models
ClickUi is a Python desktop assistant that opens with a hotkey and supports text and voice conversations with local or API-based AI models. It suits people who want AI tools available alongside their everyday computer work.
koodo-reader: Manage and Read Ebooks Across Devices
Koodo Reader is a cross-platform ebook library and reader for desktop, mobile, and web. It supports many document and comic formats, configurable reading tools, and optional sync and backup services for readers who want one library across devices.
AingDesk: Use AI Models, Knowledge Bases, and Agents
AingDesk is a desktop and server-deployable AI assistant for using model APIs or local models alongside knowledge bases, web search, and agents. It suits people who want these capabilities in one interface, with options to share assistants online.
vtm: Create a Text-Based Desktop and Terminal Multiplexer
vtm is a C++ virtual terminal multiplexer that can run a text-based desktop, host command-line apps, or act as a standalone terminal. It suits users who want nested terminal workspaces across Windows and Unix-like systems.
Harden-Windows-Security: Apply Supported Windows Security Controls
A Windows security project with apps and guidance for hardening devices through built-in Microsoft security features. It covers system configuration, compliance checks, and application control for personal users and managed environments.
paperlib: Manage and Organize Academic Papers
Paperlib is a cross-platform desktop tool for collecting, searching, and organizing academic papers. It helps researchers find and correct publication metadata, manage PDFs and notes, and export references while writing.