Open source cross-platform projects
Every project in the registry tagged cross-platform, ranked by real GitHub adoption.
Your personal distributed filesystem
Press a key, speak, release. Text appears instantly.
Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI
Wiki.js | Next Generation Open Source Wiki
Cross-platform, secure password manager
Readest is a modern, feature-rich ebook reader designed for avid readers offering seamless cross-platform access, powerful tools, and an intuitive interface to
Track time automatically with privacy-first design
Professional audio editing made simple and free
A free, open source, cross-platform video editor
Free, open-source framework for cross-platform game development
Yet another cross-platform graphical process/system monitor.
Cross-platform lib for process and system monitoring in Python
Voice-to-text that works offline, privately, on any app
Clean your system and free disk space
NLog - Flexible and Structured Logging for various .NET Platforms
🐬DeepChat - A smart assistant that connects powerful AI to your personal world
Open-source, desktop-grade AI agent that gets real work done — data analysis, slides, docs, video & web research. Built on OpenClaw; runs tools on your real des
Desktop SQL client with built-in MCP for AI agent access
A build system for creating cross-platform styles.
A simple, cross platform, modulith ecommerce system built on .NET
DotnetSpider, a .NET standard web crawling library. It is lightweight, efficient and fast high-level web crawling & scraping framework
Free and Open Source Photo Libraries
Get tasks and ideas out of your head. A free GTD to-do app for desktop and mobile. Works offline, no account needed
Orkas is an open-source, local-first AI desktop app: a commander LLM directs specialist sub-agents, and runs your installed coding CLIs — Claude Code, Codex, Op
High-performance multi-data-source database client — ~30MB, AI & MCP ready, zero Electron bloat. | 高性能多数据源数据库客户端：约 30MB，AI 与 MCP 就绪，告别 Electron 膨胀。
Native A2UI Renderer for iOS/Android/HarmonyOS. High performance streaming Generative UI. Custom Components, Styles and more.
Fast, local-first Git GUI built in Rust
Agentic SQL database manager for 40+ databases — PostgreSQL, MySQL, SQL Server, SQLite, DuckDB, ClickHouse, Oracle and more. Lightweight, privacy-first, AI-powe
Distraction-free note-taking with powerful features
Related tags
Frequently asked questions
How many open source cross-platform projects are there?
This registry tracks 29 projects tagged cross-platform, with 340,971 GitHub stars between them. The most-adopted is Spacedrive at 39,003 stars.
Are these cross-platform projects free to use?
Yes — 25 of the 29 carry an explicit open-source licence across 6 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which cross-platform project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these cross-platform projects still maintained?
26 of the 29 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.