Better Notes - Simple notes app that ties notes together with #hashtags
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.
Paper - Super-clean writing space with a lot of configurability that stays out of sight when you don’t need it.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
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.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.