TimeCamp
timecamp.com
A time tracking tool with automatic activity detection that logs which app or website you're using without requiring you to start a timer — with project categorization, billable hours, and client invoicing.
Why it is useful
Automatic time tracking is what separates it from manual trackers like Toggl. It detects your active window and logs time without disrupting your workflow, which makes it far more accurate for freelancers billing hourly. The project and task hierarchy lets you see exactly which client and project consumed your week. Integrations with Jira, Asana, and Trello keep tracked time aligned with your work.