SelfControl For Mac Publisher's description
from Steve Lambert
SelfControl is an OS X application which blocks access
Is email a distraction? SelfControl is an OS X application which blocks access to incoming and/or outgoing mail servers and websites for a predetermined period of time. For example, you could block access to your email, facebook, and twitter for 90 minutes, but still have access to the rest of the web. Once started, it can not be undone by the application, by deleting the application, or by restarting the computer вЂ“ you must wait for the timer to run out.
What's New in This Release:* Automatic checkup safety system to eliminate permablocks
* UI refresh
* User-settable block duration/intervals
* Other minor improvements
System Requirements:No special requirements.
Program Release Status: Minor Update
Program Install Support: Install and Uninstall