TimeTrackApp - TimeTrack Enterprise is ideal for collaboration in teams and companies. At the same time the freelancer version was designed for individuals who want keep track of their projects.
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.
Sawayo.de - The business owner tool which saves hundreds of hours spend on non-value-adding tasks like employee time tracking, compliance research and workflow implementation (available in German).
Clockify - Simple and free time tracker. Perfect for small and mid-sized businesses as well as freelancers. Unlimited projects and users, unlimited productivity. Get all the premium functionalities, completely free.
TimeTac - Time tracking software online: Simple & user-friendly ✔ log time anytime, anywhere✔ live time tracker ✔ detailed working hour reports ✔ 30 day free trial!
Cattr - Cattr is a free open-source self-hosted time tracker with desktop clients for windows, mac, linux.