Workday - Workday is an on‑demand financial management and human capital management software solution.
Cattr - Cattr is a free open-source self-hosted time tracker with desktop clients for windows, mac, linux.
Paylocity - Paylocity has revolutionized the industry and has quickly become the leading independent provider of online payroll services and HR solutions.
TopTracker - Beautiful, free time tracking
Paycom - Paycom is a Human Capital Management system that helps companies manage the complete employment life cycle, from recruitment to retirement.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.