Compare software

Zim vs OutWiker: catalog facts
Zim	OutWiker
Free Free and open source.	Free Free and open source under the GPL-3.0 license.
Windows, Linux	Windows, Linux
Notes stored as plain text files you can edit elsewhere Pages created simply by linking to them	Stores the note tree as regular directories Supports attachments, tags, and page links
Uses its own wiki markup rather than Markdown Desktop only, with no built-in sync or mobile app	Officially listed for Windows and Linux
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account 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 October 8, 2026

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