Vacation Tracker - The easiest way to track your team’s vacations and days off.
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.
Punchtime - Nifty time tracking for Trello users and teams
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Circlebatch - Circlebatch helps people working on side projects, open source, or startups find contributors to join them.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.