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Omnivore vs Web Highlights: catalog facts
Omnivore	Web Highlights
Free Free and open source under the AGPL-3.0 licence.	Free The extension is free to install and use without signing up.
Web, Self-hosted, Browser extension	Browser extension
Highlights, notes and labels on saved articles Newsletters by email, PDFs and RSS feeds in one place	Highlights persist on web pages and PDFs after reload Notes and tags for organising research
Hosted service closed, so you must run your own server Maintained by the community after the company stepped back	Proprietary extension Notes live in the extension's own app rather than plain files
Self-hosted	Browser extension
Open source	Closed source
License: AGPL-3.0	License not stated
Not stated if an account is needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

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