The SaaS 1000 is a list that highlights the top growing SaaS companies based on a proprietary algorithm that includes hiring trends, growth indicators and number of employees. We have created a seamless algorithm that tracks a SaaS company’s 6 month employee-size growth, and overall employee size, to come up with the SaaS 1000 ranking.

WhatRuns is a free technology lookup tool for developers, designers and salespeople to discover the technologies used on any website. Available for free on Chrome and Firefox. Featured 3 years ago.

I've interviewed over 1000 CEO's for my podcast The Top Entreprenuers where I get revenue data, customer counts, and more from SaaS CEO's. This product makes all that audio data available in spreadsheet form.