Compare software

Loop vs Penc: catalog facts
Loop	Penc
Free Free and open source, with optional donations.	Free Free download from GitHub releases.
macOS	macOS
Radial menu for picking window positions quickly Keyboard shortcuts as well as mouse-driven selection	Move and resize windows with two-finger gestures Snap to halves and quarters with a fast swipe
Requires macOS 13 or later macOS only	macOS only Needs a trackpad to be useful
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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