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Page Assist vs Monica: catalog facts
Page Assist	Monica
Free Free and open source.	Freemium Free to start, with paid plans listed on the pricing page.
Browser extension	Windows, macOS, Android, iOS, Web, Browser extension
Sidebar for chatting alongside any web page Works with locally running models such as Ollama	Several AI model families in one interface Works in a sidebar on any webpage
Needs a separate local model server to be useful	Browser extension covers Chrome and Edge only All processing happens on hosted servers
Browser extension	Downloadable app, Web application, Browser extension
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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