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An Otter Wiki vs Wiki|Docs: catalog facts
An Otter Wiki	Wiki\|Docs
Free Free and open source under the MIT licence.	Free Free and open source under the MIT licence; donations accepted.
Self-hosted	Self-hosted
Git backend with full page history Extended Markdown with tables, formulas and diagrams	Content stays as portable Markdown files Standalone desktop app plus self-hosted server
Mermaid diagrams and Git server are experimental Deliberately minimal feature set	Version 2 is a recent full rewrite Supported desktop operating systems not stated in the research
Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License: MIT	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it 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.