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SubEthaEdit vs Smultron: catalog facts
SubEthaEdit	Smultron
Free Free and open source.	Paid One-time purchase of $9.99 for Smultron 14, with a free trial download and upgrade and…
macOS	macOS
Real-time collaborative editing Block editing on multiple lines	One-time purchase with no subscription Older versions available for earlier macOS releases
macOS only Smaller extension ecosystem than mainstream editors	macOS only Current version requires macOS 14 Sonoma or later
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
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.