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