I have researched the e-commerce platforms, B2B marketplaces, business search engines, directories in USA and I found the following interesting B2B and business matchmaking websites:
Business.com, Daily Page views: 293,084, Alexa Rank: 3,412, Page Rank: 7, Created 1998.
This site is a leading business search engine and business directory. Ask an expert about business. Get the expert guides and see user questions online. You can find all you need to know about business on this website.