500 Makers - An updated list of the Top 500 Makers on Product Hunt
indeed - Find jobs using Indeed, the most comprehensive search engine for jobs.
The Y Combinator Database - The definitive database of YC companies with all the metrics
LinkedIn - LinkedIn is a business-oriented social networking service, mainly used for professional networking.
Population Project - Your life in numbers and dates. How long will you live?
Monster.com - Monster.com is one of the largest employment websites and job search engine in the world.