Competitive Intelligence Tools for Web

Competitive Intelligence is the action of gathering, analyzing, and applying information about products, domain constituents, customers, and competitors for the short term and long term planning needs of an organization. Marketing pilgrim editor Andy beal shares his list of 14 competitive intelligence tools which  he uses to spy on his competitors' web sites in this ppt. Though majorly meant for the SEO and SEM guys it contains some interesting resources for finding about SEC filings and patents of your rival companies. While some of these tools are paid there are some very good free tools also not mentioned in the ppt especially the google trio of Google insights, Google Adwords keyword tool and  Google trends.