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Harper vs Ginger: catalog facts
Harper	Ginger
Free Free and open source.	Free The browser extensions are listed as free to add.
macOS, Web, Browser extension, Command line	Windows, macOS, Android, Browser extension
All checks run locally with no telemetry Works in browsers, editors and system-wide on macOS	Context-based grammar and spelling corrections Rephrasing and synonym suggestions
English only Rule-based checks do not rewrite text the way AI assistants do	Focused on English Text is checked by an online service
Downloadable app, Web application, Browser extension	Downloadable app, 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
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

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