Ghostnote - Add notes to anything.
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.
Somnote - More often than not, note-taking is a pressing, off the cuff movement that requests a quick and productive approach.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Box Notes - Box Notes: take meeting notes, share status updates and plan projects together instantly. Online, across devices.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.