Here we have three example popular input methods on Windows:
These four input methods, together with Microsoft Pinyin, share the almost all of the market of modern Simplified Chinese PinYin input methods, which covers over three hundred million (300,000,000) users.
Note
Because of the very large user base, the examples given on this page should be able to describe current status of mainstream input methods. If you are a UI/UX designer, or someone working on IME but never tried them (carefully) on Windows, please look at all the details given here, which may give you some basic concepts.