Open source c-plus-plus projects
Every project in the registry tagged c-plus-plus, ranked by real GitHub adoption.
Free, open-source software for video recording and live streaming
The Serenity Operating System 🐞
SRS is a simple, high-performance, AI-driven real-time media server supporting RTMP, WebRTC, HLS, HTTP-FLV, HTTP-TS, SRT, MPEG-DASH, and GB28181, with codec sup
Full-featured media center for your TV and beyond
🔥 A cross-platform build utility based on Lua
A multi core friendly rigid body physics and collision detection library. Written in C++. Suitable for games and VR applications. Used by Horizon Forbidden West
Free, cross-platform video editor that's easy to learn
QOwnNotes is a plain-text file notepad and todo-list manager with Markdown support and Nextcloud / ownCloud integration.
Fast and beautiful note-taking app written in C++. Write down your thoughts.
Mapnik is an open source toolkit for developing mapping applications
Explorer++ is a lightweight and fast file manager for Windows
Portable, simple and extensible C++ logging library
3D game engine with lua scripting
Reading, writing, and processing images in a wide variety of file formats, using a format-agnostic API, aimed at VFX applications.
Community effort to maintain and improve Jedi Academy (SP & MP) + Jedi Outcast (SP only) released by Raven Software
Money Manager Ex is an easy to use, money management application built with wxWidgets
File and Archive Manager
QtPass is a multi-platform GUI for pass, the standard unix password manager.
SimpleITK: a layer built on top of the Insight Toolkit (ITK), intended to simplify and facilitate ITK's use in rapid prototyping, education and interpreted lang
G3log is an asynchronous, "crash safe", logger that is easy to use with default logging sinks or you can add your own. G3log is made with plain C++14 (C++11 s
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Frequently asked questions
How many open source c-plus-plus projects are there?
This registry tracks 20 projects tagged c-plus-plus, with 229,758 GitHub stars between them. The most-adopted is OBS Studio at 78,788 stars.
Are these c-plus-plus projects free to use?
Yes — 18 of the 20 carry an explicit open-source licence across 9 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 c-plus-plus 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 c-plus-plus projects still maintained?
19 of the 20 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.