head to head · open source
imgui vs Fyrox
imgui has 76,445 GitHub stars, 12,065 forks, 1,227 open issues and last shipped yesterday. Fyrox has 9,571 stars, 451 forks, 59 open issues and last shipped yesterday. imgui leads on adoption by 699% (76,445 vs 9,571 stars). imgui is written in C++ under MIT; Fyrox is written in Rust under MIT. imgui has attracted 16% as many forks as stars, Fyrox 5%. Fyrox was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 4 topic tags (game-development, game-engine, gamedev, gui), 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 | Fyrox | |
|---|---|---|
| GitHub stars | ★ 76K | ★ 9.6K |
| License | MIT | MIT |
| Written in | C++ | Rust |
| Last push | 2026-09-30 | 2026-09-30 |
| Forks | ⑂ 12K | ⑂ 451 |
| 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 Fyrox if
- You want the Fyrox feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Rust
- You evaluated both and Fyrox 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 Fyrox
Fyrox is an MIT licensed, general purpose 2D and 3D game engine written in Rust, distributed as a crate with an integrated scene editor, and it is aimed at developers who want to build games in Rust with a single engine and a matching authoring tool.
read the full Fyrox overview →
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Frequently asked questions
Is imgui or Fyrox more popular?
imgui has 76,445 GitHub stars and Fyrox has 9,571. imgui has the larger community by that measure.
Are imgui and Fyrox free?
Both are open source. imgui is licensed under MIT and Fyrox under MIT. Neither carries a licence fee.
What is the difference between imgui and Fyrox?
imgui is written in C++ and Fyrox in Rust. 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 Fyrox?
Choose imgui if you want the larger community (76,445 stars) or its MIT licence terms. Choose Fyrox if its feature set, stack or MIT licence fits better. Both are self-hostable.