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McBopomofo vs Squirrel: catalog facts
McBopomofo	Squirrel
Free Free and open source under the MIT License.	Free Free and open source, with optional donations to the developer.
macOS, Linux, Web	macOS
Supports six keyboard layouts User-editable dictionary	Many Chinese input schemes, from Pinyin to Cangjie and Jyutping Custom input schemes can be written and shared
Traditional Chinese Bopomofo input only Website and documentation are in Chinese	Configuration is done through text files and takes some learning Documentation is mainly in Chinese
Downloadable app, Web application	Downloadable app
Open source	Open source
License: MIT	License not stated
No account needed	No account needed
Works offline	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.