tabExtend - Easily save tabs and quickly create notes in your browser
Time Sink - Time Sink helps you track how you spend your time on your Mac.
Tabbie - The missing tab manager for Chrome
ChatterBlocker - ChatterBlocker is the prime software to reduce the nearby conversation’s distraction that allows you to focus on your work.
Toby - Better Than Bookmarks
Strict Workflow - Enforces the Pomodoro time management technique by blocking distracting sites