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YaCy vs Marginalia Search: catalog facts
YaCy	Marginalia Search
Free Free and open source software.	Free Free to use, with the index and crawler source published under the AGPL.
Web, Self-hosted	Web
Decentralized peer-to-peer web index with no central operator Can run as a private crawler or intranet search portal	Surfaces small, non-commercial and text-heavy websites Discovery tools for browsing beyond direct queries
Pre-compiled packages are not built regularly; compiling from source is recommended Peer-to-peer results are less complete than major web search engines	Deliberately narrow index, not a replacement for a general search engine Small independent project with limited resources
Downloadable app, Self-hosted	Web application
Open source	Open source
License: GPL-2.0	License: AGPL-3.0
No account needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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