head to head · open source
imgui vs NettyGameServer
imgui has 76,445 GitHub stars, 12,065 forks, 1,227 open issues and last shipped yesterday. NettyGameServer has 1,673 stars, 672 forks, 3 open issues and last shipped 6 months ago. imgui leads on adoption by 4,469% (76,445 vs 1,673 stars). imgui is written in C++ under MIT; NettyGameServer is written in Java under GPL-3.0. imgui has attracted 16% as many forks as stars, NettyGameServer 40%. imgui was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (game-engine), 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 | NettyGameServer | |
|---|---|---|
| GitHub stars | ★ 76K | ★ 1.7K |
| License | MIT | GPL-3.0 |
| Written in | C++ | Java |
| Last push | 2026-09-30 | 2026-04-14 |
| Forks | ⑂ 12K | ⑂ 672 |
| 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 NettyGameServer if
- You want the NettyGameServer feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Java
- You evaluated both and NettyGameServer 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 NettyGameServer
NettyGameServer is a Java, GPL 3.0 licensed distributed mobile game server built on Netty 4.X that gives backend teams TCP, UDP, HTTP and WebSocket entry points, protobuf based protocol handling and sharded, Redis cached MySQL persistence in one starting point.
read the full NettyGameServer overview →
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Frequently asked questions
Is imgui or NettyGameServer more popular?
imgui has 76,445 GitHub stars and NettyGameServer has 1,673. imgui has the larger community by that measure.
Are imgui and NettyGameServer free?
Both are open source. imgui is licensed under MIT and NettyGameServer under GPL-3.0. Neither carries a licence fee.
What is the difference between imgui and NettyGameServer?
imgui is written in C++ and NettyGameServer in Java. 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 NettyGameServer?
Choose imgui if you want the larger community (76,445 stars) or its MIT licence terms. Choose NettyGameServer if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.