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Hammerspoon vs Script Kit: catalog facts
Hammerspoon	Script Kit
Free Free and open source under the MIT licence.	Free Free, open-source download; the site does not list a price.
macOS	Windows, macOS, Linux
Extensions reach a large part of macOS: windows, spaces, hotkeys, wifi, battery, USB, menu bar and more Lua is small enough to learn in an afternoon	Turns short JavaScript or TypeScript files into launchable tools SDK with ready-made prompts and helpers
Does nothing until you write a config file, so there is no point installing it casually macOS only	Windows and Linux versions are in beta Aimed at people comfortable writing code
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

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