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SurfSense vs RAGFlow: catalog facts
SurfSense	RAGFlow
Free Free and open source to self-host.	Free Free and open source to self-host.
Web, Self-hosted	Web, Self-hosted
Can run air-gapped with your data kept private Answers questions over your own documents and connected sources	Ingestion pipeline for many document and data formats Hybrid vector and full-text search with re-ranking
Requires setting up and maintaining your own server Fast pace of change can mean frequent updates	Server setup is more involved than a desktop chat app Geared toward teams and organisations more than individuals
Self-hosted	Self-hosted
Open source	Open source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 23, 2026

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