Capterra - Capterra helps millions of people find the best business software. With software reviews, ratings, infographics, and the most comprehensive list of the top business software products available, you're sure to find what you need at Capterra.
Clearbit - Clearbit provides Business Intelligence APIs
AlternativeTo - AlternativeTo lets you find apps and software for Windows, Mac, Linux, iPhone, iPad, Android, Android Tablets, Web Apps, Online, Windows Tablets and more by recommending alternatives to apps you already know.
ZoomInfo - ZoomInfo is a B2B database providing detailed business information on people and companies.
SaaSHub - Find and promote software that will help you grow your business or to be more productive.
InsideView - InsideView aggregates and curates all the company and contact data, news and social insights, and professional connections you need to do business better.