500 Makers - An updated list of the Top 500 Makers on Product Hunt
Out of Office Email Generator - Personalized, witty OOO replies for guilt-free vacationing.
The Y Combinator Database - The definitive database of YC companies with all the metrics
Rebump - Automatic follow up emails. Keeps on bumping until you get a reply.
Population Project - Your life in numbers and dates. How long will you live?
Excuse generator - Don't want to go to office? They are here to help.