How not to launch - Learn lessons on failed products and startups
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
The Google Cemetery - A list of dead Google products and why they died
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Failory - Failory is a community visited by startup founders every day to read articles about entrepreneurship, interviews with failed and successful founders, insightful postmortems and our monthly reports.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.