TopTracker - Beautiful, free time tracking
Runway - A free, visual tool to help startup founders understand, manage and extend their cash runway.
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.
Cushion - A forecasting app for freelancers, get better insights
Cattr - Cattr is a free open-source self-hosted time tracker with desktop clients for windows, mac, linux.
Ding - Dead simple time tracking for freelancers and small teams