Anti-Social is described as '[This app is developed by the same company that's behind Freedom ]'. There are more than 25 alternatives to Anti-Social for a variety of platforms, including Android, Mac, Windows, Google Chrome and iPhone. The best alternative is Cold Turkey, which is free. Other great apps like Anti-Social are Forest (Freemium), SelfControl (Free, Open Source), StayFocusd (Free) and Freedom (Paid).
SelfControl is a free and open-source application for Mac OS X that lets you block your own access to distracting websites, your mail servers, or anything else on the Internet. Just set a period of time to block for, add sites to your blacklist, and click "Start.
Freedom is an application that disables networking on an Apple computer for up to eight hours at a time. Freedom will free you from the distractions of the internet, allowing you time to code, write, or create.
BrowseControl is an agent-based web filter that blocks websites based on URLs and categories. Internet use quotas can be set based on schedules and timers. Includes a port filter and Windows application blocker.
Iris is software which makes monitors healthy for the eyes. With iris you can reduce the blue light emitted from your screen for better sleep, reduce the brightness of your screen without PWM and avoid eye pain.