Insider Company Comparisons - Compare hundreds of top tech companies all in one place
Clearbit Connect - Clearbit Connect is a free extension that surfaces actionable information on the people who email you.
Product Comparisons - Compare any 2 software products
ProsContras - Create Pro's & Con's Lists with ease.
Appsolite - Evaluating software is laborious, time consuming and riddled with a lot of guess-work.
Hunter - Find all the email addresses related to a domain