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OpenBoard vs Lorien: catalog facts
OpenBoard	Lorien
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under the MIT licence.
Windows, macOS, Linux	Windows, macOS, Linux
Provides classroom-oriented drawing and presentation tools.	Infinite canvas for freeform sketching and notes Stroke-based storage keeps save files small
Official Linux packages target Debian, with other distributions relying on community builds.	Not a bitmap painting program Deliberately limited feature set
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
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 September 22, 2026	Official website Full listing and sources Checked October 2, 2026

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