Open source cpp projects
Every project in the registry tagged cpp, ranked by real GitHub adoption.
Lightning-fast analytics for massive datasets
Open-source financial terminal for data-driven insights
Blazing-fast in-memory data store for modern applications
Privacy-first offline maps for hiking, cycling & navigation
A distributed, fast open-source graph database featuring horizontal scalability and high availability
Lightning-fast open source search engine for big data
最全面的游戏开发技术图谱(Game Development Map)。帮助游戏开发者们在已知问题上节省时间，省出更多的精力投入到更有创造性的工作中去。
Free open source home automation system for Linux, Windows, Raspberry Pi. Supports Z-Wave, Zigbee, MQTT, and 150+ devices.
Open-source document editing suite for secure collaboration
Money Manager Ex is an easy to use, money management application built with wxWidgets
Real-time stream processing made simple and affordable
C++ Discord API Bot Library - D++ is Lightweight and scalable for small and huge bots!
Related tags
Frequently asked questions
How many open source cpp projects are there?
This registry tracks 12 projects tagged cpp, with 172,719 GitHub stars between them. The most-adopted is ClickHouse at 49,951 stars.
Are these cpp projects free to use?
Yes — 8 of the 12 carry an explicit open-source licence across 4 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 cpp 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 cpp projects still maintained?
12 of the 12 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.