Siftery - Share products your company uses and get personalized recommendations
TestBox - Test drive your software options before you buy
Stackshare - StackShare is a comprehensive website that gives its users the chance to organize and share their technology stack with the rest of the community.
SaaSHub - Find and promote software that will help you grow your business or to be more productive.
Product Comparisons - Compare any 2 software products
Product Alternatives - Find alternatives and actual replacements for B2B software