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YaCy vs Sosse: catalog facts
YaCy	Sosse
Free Free and open source software.	Free Open source under the AGPL-3.0 license.
Web, Self-hosted	Web, Self-hosted, Command line
Decentralized peer-to-peer web index with no central operator Can run as a private crawler or intranet search portal	Searches crawled and archived pages Supports offline browsing of saved pages
Pre-compiled packages are not built regularly; compiling from source is recommended Peer-to-peer results are less complete than major web search engines	Requires self-hosting
Downloadable app, Self-hosted	Downloadable app, Web application, Self-hosted
Open source	Open source
License: GPL-2.0	License: AGPL-3.0
No account needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 8, 2026

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