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McBopomofo vs Sogou Input Method: catalog facts
McBopomofo	Sogou Input Method
Free Free and open source under the MIT License.	Free Free to download from the official site.
macOS, Linux, Web	macOS
Supports six keyboard layouts User-editable dictionary	Supports full and double pinyin Large built-in vocabulary
Traditional Chinese Bopomofo input only Website and documentation are in Chinese	Website is in Chinese only Closed source
Downloadable app, Web application	Downloadable app
Open source	Closed 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 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.