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.

Startup Stash - A curated directory of 400 resources & tools for startups

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

Startup Buffer - Startup Buffer is a premium startup directory for emerging startups all around the world.

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

Makerbook - A directory of the best free resources for creatives