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Squirrel vs Sogou Input Method: catalog facts
Squirrel	Sogou Input Method
Free Free and open source, with optional donations to the developer.	Free Free to download from the official site.
macOS	macOS
Many Chinese input schemes, from Pinyin to Cangjie and Jyutping Custom input schemes can be written and shared	Supports full and double pinyin Large built-in vocabulary
Configuration is done through text files and takes some learning Documentation is mainly in Chinese	Website is in Chinese only Closed source
Downloadable app	Downloadable app
Open source	Closed source
License not stated	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 October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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