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Open Notebook vs Open WebUI: catalog facts
Open Notebook	Open WebUI
Free Free and open source under the MIT license.	Freemium Free to self-host. The project sells an enterprise plan with support and branding rights.
Web, Self-hosted	Self-hosted, Web
Privacy-focused self-hosted alternative to a well-known proprietary tool MIT licensed with an active Discord community	One interface for local Ollama models and any OpenAI-compatible API Document upload and retrieval so you can ask questions about your own files
Local processing still depends on which model provider is configured Smaller community than the proprietary product it alternatives	The licence adds a branding condition, so it is not plain BSD It is a server you have to run, update and secure yourself
Self-hosted, Web application	Self-hosted, Web application
Open source	Not stated if open source
License: MIT	License: Open WebUI License, based on BSD-3-Clause with a branding clause
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.