Comparison of hosting management products

Compile min 15 page (1800 characters/page in English) comparison of hosting management products. At minimum, it should include Hostbill, Whmcs and Ubersmith platforms and one more. At authors discretion additional ones can be included. It should have general description of each product and comparison table. It is for internal use (will not be published), so copy/paste from other sources is allowed. Invoice required. I will not be knitpicking. Need something quick and dirty. Will be translated to other language.