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.

devmarks.io - Bookmarking for Developers

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

GitHub Repository Size - Browser extension to show file and repo size in GitHub

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

Pinboard - Pinboard is a personal archive for things you find online and don't want to forget.