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.

Freelancer Stack - Curated directory of tools used by 10,000+ freelancers

Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.

Alpas - Manage your team's work, projects & tasks online for free.

Hubstaff - Simple yet powerful employee work tracker with screenshots, timesheets, billing, in-depth reports, and more. Understand productivity issues and act on them.

Blueprint by Gigster - Transform your idea into a plan any dev can build