Compare software

KRuler vs Length: catalog facts
KRuler	Length
Free Free and open source under the GPL-2.0 or later.	Free Free and open source under the GPL-3.0-or-later licence.
Linux	Linux
Measures on-screen elements directly Small single-purpose utility	Measures anything visible on screen Supports several units, including pixels and centimetres
Linux only Basic tool with a narrow purpose	Linux only Small project with few contributors
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0-or-later	License: GPL-3.0-or-later
No account needed	No account needed
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.