head to head · open source
imgui vs engine
imgui has 76,322 GitHub stars, 12,053 forks, 1,227 open issues and last shipped yesterday. engine has 16,890 stars, 2,000 forks, 471 open issues and last shipped today. imgui leads on adoption by 352% (76,322 vs 16,890 stars). imgui is written in C++ under MIT; engine is written in JavaScript under MIT. imgui has attracted 16% as many forks as stars, engine 12%. engine was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 3 topic tags (game-development, game-engine, gamedev), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| imgui | engine | |
|---|---|---|
| GitHub stars | ★ 76K | ★ 17K |
| License | MIT | MIT |
| Written in | C++ | JavaScript |
| Last push | 2026-09-22 | 2026-09-23 |
| Forks | ⑂ 12K | ⑂ 2.0K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick imgui if
- You weight community size — 76K stars and counting
- You want the MIT license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick engine if
- You want the engine feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and engine fits your workflow better
About imgui
Dear ImGui is a bloat free, MIT licensed graphical user interface library for C++ that outputs optimized vertex buffers for rendering inside 3D pipeline enabled applications, and it is aimed at programmers building content creation, visualization, and debug tools rather than at developers shipping consumer facing UI.
read the full imgui overview →
About engine
PlayCanvas Engine is an open source, MIT licensed JavaScript and TypeScript runtime for building interactive 3D apps, games and visualizations that run in any browser on any device, built on WebGL2 and WebGPU.
read the full engine overview →
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Frequently asked questions
Is imgui or engine more popular?
imgui has 76,322 GitHub stars and engine has 16,890. imgui has the larger community by that measure.
Are imgui and engine free?
Both are open source. imgui is licensed under MIT and engine under MIT. Neither carries a licence fee.
What is the difference between imgui and engine?
imgui is written in C++ and engine in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, imgui or engine?
Choose imgui if you want the larger community (76,322 stars) or its MIT licence terms. Choose engine if its feature set, stack or MIT licence fits better. Both are self-hostable.