Founded in 1998, Massinvestor is the leading publisher of Venture Capital directories, each providing coverage of the nation’s top regions for venture financing as well as the entire US.

Today the company released its third annual 2011 United States Venture Capital & Private Equity Directory. This directory includes information on VCs, Private Equity firms, Angels, Incubators, Merchant Banks, Fund of Funds, Economic Development Groups, Technology Transfer Offices, Secondary Purchasers, Venture Debt, Family Investment Offices, and Corporate VCs all across the US.

2011’s directory includes hundreds of new firms that launched in 2010 like 500 Startups that aren’t in last year’s directory. For $595 you get a hardcopy, ebook, online database access with filtered search (location, industry, firm type, stage, etc.), and an Excel spreadsheet containing the zip code and email addresses of more than 9,500 individual investment partners (score!).

Interested in just the Massachusetts region? You can purchase that 2011 Massachusetts directory of 375 firms for $185.

“We’re very excited about publishing our third national edition,” said Michael Stern, the directory’s Editor and Publisher. “As the country is making its way out of the recession, VC investors continue to invest across the country to support exciting innovations and technologies. We make it easy for entrepreneurs and professional service providers to locate sources of capital.”