Relation(s) between/among Kate, Kwrite, and Katepart

[Richard Owlett <rowlett@access.net>]

I'm restarting a editing project that could take advantage of using 
"regular expressions".

I had stated using Kate for the project.

I'm reviewing my regular expression related web searches. It would be 
helpful if I could find a _single_ document that made comparison 
between/among Kate, Kwrite, and Katepart. [e.g. package goals]

Suggestions?

TIA