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StaticDesktopRuler vs Free Ruler: catalog facts
StaticDesktopRuler	Free Ruler
Free Freeware distributed by the developer.	Free Free and open source, with optional donations.
Windows	macOS
Supports up to 20 customizable rulers Works across multiple monitors	Measures in pixels, millimeters or inches Single-key shortcuts for every main action
Windows only	macOS only Requires macOS Sonoma or later; older builds are on the releases page
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
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 8, 2026	Official website Full listing and sources Checked October 1, 2026

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