My Daily Planner - Organize your day with pen & paper. Free printable template.
Time Sink - Time Sink helps you track how you spend your time on your Mac.
Amazing Marvin - Customizable personal productivity tool
Anti-Social - Anti-Social is a productivity application for Macs that turns off the social parts of the internet.
FocusList - Daily planner & focus timer based on timeboxing and pomodoro
Strict Workflow - Enforces the Pomodoro time management technique by blocking distracting sites