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TiddlyWiki vs OutWiker: catalog facts
TiddlyWiki	OutWiker
Free Free and open source.	Free Free and open source under the GPL-3.0 license.
Web	Windows, Linux
Whole notebook is one portable HTML file Non-linear notes that can be tagged and linked	Stores the note tree as regular directories Supports attachments, tags, and page links
Saving a single-file wiki from a browser can need extra setup The tiddler model takes time to learn	Officially listed for Windows and Linux
Downloadable app, Web application	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account 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 23, 2026	Official website Full listing and sources Checked October 8, 2026

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