Sources.net
The most pratcical and effective tools for marketing your website, such as search engines, webtools, keywordproviders, web advertising companies and some practical guidelines for web marketing.
Measure and Control
Marketleap, Link popularity check
http://www.marketleap.com/publinkpop/
DART webadvertising systems
Clickalyzer
Tracewatch
ALEXA-toolbar for statistics
Google toolbar for Google rating
Webtrends, site visiting statistics