Download of SunPinyin 3.0 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software relates to Education Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The actual developer of this free Mac application is Casper Ti. Vector.
From the developer:
A statistical language model based Chinese input method. SunPinyin is an SLM (Statistical Language Model) based input method engine. To model the Chinese language, it uses a backoff bigram and trigram language model.
Currently, SunPinyin 3.0 is available on IBus, SCIM, and as a standalone XIM Server.
You may want to check out more Mac applications, such as USA-Manual-Mac, Bible Sander or Biology, which might be related to SunPinyin.