head to head · open source
Open WebUI vs Swirl Search
Open WebUI has 152,394 GitHub stars, 22,296 forks, 294 open issues and last shipped yesterday. Swirl Search has 3,046 stars, 286 forks, 1 open issues and last shipped 13 days ago. Open WebUI leads on adoption by 4,903% (152,394 vs 3,046 stars). Open WebUI is written in Python under a custom or non-standard licence; Swirl Search is written in Python under Apache-2.0. Open WebUI has attracted 15% as many forks as stars, Swirl Search 9%. Open WebUI was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (rag), 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
| Open WebUI | Swirl Search | |
|---|---|---|
| GitHub stars | ★ 152K | ★ 3.0K |
| License | Custom / other | Apache-2.0 |
| Written in | Python | Python |
| Last push | 2026-09-17 | 2026-09-05 |
| Forks | ⑂ 22K | ⑂ 286 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Open WebUI if
- You weight community size — 152K stars and counting
- You want the Custom / other license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick Swirl Search if
- You want the Swirl Search feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and Swirl Search fits your workflow better
About Open WebUI
Open WebUI is a self hosted, open source AI interface that unifies access to local and cloud based large language models. It runs entirely in a web browser and supports Ollama for local model hosting alongside any OpenAI compatible API, including services like LMStudio, GroqCloud, Mistral, and OpenRouter. Built in Python, it functions as a drop in replacement for proprietary AI platforms, giving users full control over their model infrastructure and data.
read the full Open WebUI overview →
About Swirl Search
Swirl Search is an open source federated AI search and retrieval augmented generation (RAG) platform written in Python and built on Django. It lives in the AI and machine learning ecosystem, specifically the AI interaction and interface space, and is distributed under the Apache 2.0 license as SWIRL Community. The project queries more than 100 connected sources live, ranks the combined results, and optionally generates an answer with citations using a large language model of the operator's choice. It ships with the Galaxy UI, the same interface used by the commercial SWIRL Enterprise edition.
read the full Swirl Search overview →
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Frequently asked questions
Is Open WebUI or Swirl Search more popular?
Open WebUI has 152,394 GitHub stars and Swirl Search has 3,046. Open WebUI has the larger community by that measure.
Are Open WebUI and Swirl Search free?
Both are open source. Open WebUI has no licence declared in this registry, and Swirl Search is licensed under Apache-2.0. Both are free to self-host.
What is the difference between Open WebUI and Swirl Search?
Open WebUI is written in Python and Swirl Search in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Open WebUI or Swirl Search?
Choose Open WebUI if you want the larger community (152,394 stars) or its Custom / other licence terms. Choose Swirl Search if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.