head to head · open source
ComfyUI vs open-spaces
ComfyUI has 136,440 GitHub stars, 16,220 forks, 4,894 open issues and last shipped yesterday. open-spaces has 3,394 stars, 496 forks, 0 open issues and last shipped yesterday. ComfyUI leads on adoption by 3,920% (136,440 vs 3,394 stars). ComfyUI is written in Python under GPL-3.0; open-spaces is written in JavaScript under MIT. ComfyUI has attracted 12% as many forks as stars, open-spaces 15%. ComfyUI was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
← all 20902 open source comparisons
Side by side
| ComfyUI | open-spaces | |
|---|---|---|
| GitHub stars | ★ 136K | ★ 3.4K |
| License | GPL-3.0 | MIT |
| Written in | Python | JavaScript |
| Last push | 2026-10-08 | 2026-10-08 |
| Forks | ⑂ 16K | ⑂ 496 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ComfyUI if
- You weight community size — 136K 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 open-spaces if
- You want the open-spaces feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and open-spaces 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 open-spaces
OpenSpaces is a free, MIT licensed, self hostable AI workspace that brings shared Spaces, editable pages, conversations, and AI tools into one application, aimed at individuals and teams who want an open alternative to ChatGPT Spaces running on their own infrastructure.
read the full open-spaces overview →
More in AI & Machine Learning
Related comparisons
More AI Interaction & Interfaces projects
Compare either of these against the rest of the AI Interaction & Interfaces field.
Frequently asked questions
Is ComfyUI or open-spaces more popular?
ComfyUI has 136,440 GitHub stars and open-spaces has 3,394. ComfyUI has the larger community by that measure.
Are ComfyUI and open-spaces free?
Both are open source. ComfyUI is licensed under GPL-3.0 and open-spaces under MIT. Neither carries a licence fee.
What is the difference between ComfyUI and open-spaces?
ComfyUI is written in Python and open-spaces 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, ComfyUI or open-spaces?
Choose ComfyUI if you want the larger community (136,440 stars) or its GPL-3.0 licence terms. Choose open-spaces if its feature set, stack or MIT licence fits better. Both are self-hostable.