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Formiko vs Zettlr: catalog facts
Formiko	Zettlr
Free Free and open source under the BSD-3-Clause license.	Free The open-source software is available without a license fee. Hosting, hardware and…
Linux	Windows, macOS, Linux
Live preview for reStructuredText and Markdown Supports multiple Docutils output formats	Combines document navigation with flexible export workflows.
The Vim editing mode requires an embedded Neovim instance.	Some publication formats require additional export dependencies.
Downloadable app	Downloadable app
Open source	Open source
License: BSD-3-Clause	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked September 22, 2026

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