TopTracker - Beautiful, free time tracking
Worksnaps - Worksnaps is a unique service specifically designed to track time for remote workers, telecommuters and freelancers.
timeBuzzer - timeBuzzer enables freelancers and project-driven teams to track their time at the touch of a button, understand where their time goes and create reports with just a few clicks.
OfficeTime - OfficeTime is a time and expense keeping utility for Mac, PC, iPhone and iPad. We also offer invoicing and reporting in an easy to use UI.
Cattr - Cattr is a free open-source self-hosted time tracker with desktop clients for windows, mac, linux.
TimeStatement - A simple time & expense tracking software with powerful invoice & report generation, best Excel alternative / extension, timesheet...