head to head · open source
ComfyUI vs AionUi
ComfyUI has 133,963 GitHub stars, 15,874 forks, 4,894 open issues and last shipped today. AionUi has 32,965 stars, 3,410 forks, 905 open issues and last shipped 11 days ago. ComfyUI leads on adoption by 306% (133,963 vs 32,965 stars). ComfyUI is written in Python under GPL-3.0; AionUi is written in TypeScript under Apache-2.0. ComfyUI has attracted 12% as many forks as stars, AionUi 10%. ComfyUI was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (ai), 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
| ComfyUI | AionUi | |
|---|---|---|
| GitHub stars | ★ 134K | ★ 33K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | Python | TypeScript |
| Last push | 2026-09-20 | 2026-09-09 |
| Forks | ⑂ 16K | ⑂ 3.4K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ComfyUI if
- You weight community size — 134K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick AionUi if
- You want the AionUi feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and AionUi fits your workflow better
About ComfyUI
ComfyUI is a GPL 3.0 licensed Python and PyTorch node graph application, local API, and backend for running diffusion models across image, video, audio, 3D, and text workflows, built for visual professionals who want control over every model, parameter, and output, and for developers who embed those workflows into production pipelines.
read the full ComfyUI overview →
About AionUi
AionUi is an open source, cross platform Cowork application that puts AI agents to work alongside the user on their own computer. It is written in TypeScript and released under the Apache 2.0 license, and it lives in the AI agent and chat tooling ecosystem alongside the command line agents it is built to host. Rather than acting as a plain chat client, it runs a built in agent engine that can read and write files, search the web, generate images, and call Model Context Protocol tools, while showing the user every action the agent takes and keeping approval in the user's hands.
read the full AionUi overview →
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Frequently asked questions
Is ComfyUI or AionUi more popular?
ComfyUI has 133,963 GitHub stars and AionUi has 32,965. ComfyUI has the larger community by that measure.
Are ComfyUI and AionUi free?
Both are open source. ComfyUI is licensed under GPL-3.0 and AionUi under Apache-2.0. Neither carries a licence fee.
What is the difference between ComfyUI and AionUi?
ComfyUI is written in Python and AionUi in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, ComfyUI or AionUi?
Choose ComfyUI if you want the larger community (133,963 stars) or its GPL-3.0 licence terms. Choose AionUi if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.