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CotEditor vs SubEthaEdit: catalog facts
CotEditor	SubEthaEdit
Free Free and open source.	Free Free and open source.
macOS	macOS
Native macOS interface and fast launch Syntax highlighting for over 60 languages	Real-time collaborative editing Block editing on multiple lines
macOS only A text editor rather than a full IDE	macOS only Smaller extension ecosystem than mainstream editors
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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