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