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Zettlr vs Formiko: catalog facts
Zettlr	Formiko
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under the BSD-3-Clause license.
Windows, macOS, Linux	Linux
Combines document navigation with flexible export workflows.	Live preview for reStructuredText and Markdown Supports multiple Docutils output formats
Some publication formats require additional export dependencies.	The Vim editing mode requires an embedded Neovim instance.
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: BSD-3-Clause
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 September 22, 2026	Official website Full listing and sources Checked October 8, 2026

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