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Octarine vs Zettlr: catalog facts
Octarine	Zettlr
Freemium Free to download, with paid features offered; see the site for details.	Free The open-source software is available without a license fee. Hosting, hardware and…
macOS	Windows, macOS, Linux
Notes kept as local Markdown files Core features built in without plugins	Combines document navigation with flexible export workflows.
Download offered for macOS only Opinionated design with fewer configuration options	Some publication formats require additional export dependencies.
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
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 23, 2026	Official website Full listing and sources Checked September 22, 2026

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