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

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