iSpionage – Keyword Research and PPC Tool
http://www.ispionage.com/

iSpionage features: a)keyword research, b) keyword clean up, c) keyword grouping, and d) campaign building tool — all in one seamless application. In depth keyword tracking across Google, Yahoo and MSN. This has been added to the tools section of Research Resources Subject Tracer™ Information Blog. This has been added to World Wide Web Reference Subject Tracer™ Information Blog.