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.
Evernote - Bring your life's work together in one digital workspace. Evernote is the place to collect inspirational ideas, write meaningful words, and move your important projects forward.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
Tyke - Mac menu bar app that @torrez really needed to take notes
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.
Thought Train - Stop using sticky notes to remember what you're doing 📒 🚫