Anti-Social is a productivity application for Macs that turns off the social parts of the internet. When Anti-Social is running, you’re locked away from distracting social media sites, including Facebook, Twitter and other sites you specify.
When Anti-Social is running, the only way to get around the block is by rebooting your computer. As you will feel a deep sense of shame for rebooting just to waste time on Twitter, you’re unlikely to cheat.