e.g. It uses thousands of rules to produce a much higher quality of auto-generated documentation text. It supports VB, C#, C++/CLI, C++ and C. It generates meaningful docs for every type of code element, it auto-documents exceptions thrown in a method, the format and layout is entirely user-configurable, it can word-wrap your entry text and expand hundreds of common abbreviations, and updates method/property/indexer comments to match the implementations. It can also duplicate best-match documentation from parameters elsewhere in the same class as well as from interface and base-class docs.

It costs a tiny amount ($10), but there’s a 30-day free trial if you want to give it a go.