Compare software

Lemma vs Bookup: catalog facts
Lemma	Bookup
Free Free and open source under the GPL-3.0-or-later licence, with optional donations.	Free Free and open source under the GPL-3.0-or-later licence.
Linux	Linux
Inline math entry with LaTeX-like autocomplete Wiki-style linking with backlinks	Notes written in Markdown Native GTK 4 interface for GNOME
Linux only No sync described on the homepage	Linux only Small single-developer project with limited documentation
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	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.