Open source ecs projects
Every project in the registry tagged ecs, ranked by real GitHub adoption.
Light, fluffy, and always free - The AWS Local Emulator alternative
:a: Web framework for building virtual reality experiences.
Gaming meets modern C++ - a fast and reliable entity component system (ECS) and much more
The One CD for All {applications, platforms, operations}
Minecraft game engine for massive custom events
Rythe is a data-oriented C++20 game engine built to make optimal use of modern hardware.
Related tags
Frequently asked questions
How many open source ecs projects are there?
This registry tracks 6 projects tagged ecs, with 61,501 GitHub stars between them. The most-adopted is floci at 27,577 stars.
Are these ecs projects free to use?
Yes — 6 of the 6 carry an explicit open-source licence across 2 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 ecs 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 ecs projects still maintained?
5 of the 6 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.