ChatterBlocker

ChatterBlocker blocks office and cubicle noise so you can focus on your work, not your coworkers.

Commercial Mac OS X Windows

Citrus

Citrus is an app that actively blocks distractions before they ever get to you. Simply tell Citrus what distracts you, and when you want it blocked, and Citrus takes...

Freemium

Focus.py

Focus.py helps you keep focused by applying schedulable firewall rules to distracting websites.

Free Open Source Mac OS X Linux

Idderall

an add-on for mozilla firefox that can help prevent you from procrastinating by setting up a schedule to block websites.

Free Mac OS X Windows Linux Firefox

Procrastination Punisher

Procrastination Punisher lets you disable certain apps for certain time frames, for example Angry Birds on workdays from 9 to 5, or your business email app on evenings...

Free Android Android Tablet