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Script Kit vs Hammerspoon: catalog facts
Script Kit	Hammerspoon
Free Free, open-source download; the site does not list a price.	Free Free and open source under the MIT licence.
Windows, macOS, Linux	macOS
Turns short JavaScript or TypeScript files into launchable tools SDK with ready-made prompts and helpers	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
Windows and Linux versions are in beta Aimed at people comfortable writing code	Does nothing until you write a config file, so there is no point installing it casually macOS only
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: MIT
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 September 23, 2026	Official website Full listing and sources Checked September 21, 2026

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