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Iotas vs tomboy-ng: catalog facts
Iotas	tomboy-ng
Free Free and open source under the GPL-3.0 or later.	Free Free and open source.
Linux	Windows, macOS, Linux
Fast Nextcloud Notes sync with offline editing Optional Markdown with a formatted view and task lists	Runs on Linux, Windows and macOS Sync between machines or to a private GitHub repository
Notes are stored in SQLite, not plain files Export to PDF, ODT and HTML is still in preview	No dedicated mobile app; phone access is through a browser via GitHub Rich text rather than Markdown
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License not stated
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 October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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