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YaCy vs Hister: catalog facts
YaCy	Hister
Free Free and open source software.	Free Free and open source under AGPL-3.0.
Web, Self-hosted	Windows, macOS, Linux, Web, Self-hosted, Browser extension, Command line
Decentralized peer-to-peer web index with no central operator Can run as a private crawler or intranet search portal	Indexes full page content, not just titles and URLs Imports history, bookmarks and local files
Pre-compiled packages are not built regularly; compiling from source is recommended Peer-to-peer results are less complete than major web search engines	Server must be running to index and search Only finds what you have visited or imported
Downloadable app, Self-hosted	Downloadable app, Self-hosted, Browser extension
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 2, 2026

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