Mozilla Compatible Agent - i believe that is the amount of people or percentage of people that visit your site using Mozilla.

Neverbot 1.0 - don't know, best i can find out at this point is that it appears to be an asian bot. every reference to it i can find is in asian.

sohu+agent
Owner of the robot : SOHU.COM Inc.
Country : China
Robot type: search engine
Description : Chinese portal site, search engine and directory.