This is what it has come to:
Freedom is a simple productivity application that locks you away from the internet on Mac or Windows computers for up to eight hours at a time. At the end of your offline period, Freedom allows you back on the internet.
Freedom enforces freedom; you’ll need to reboot if you want to get back online while Freedom’s running. The hassle of rebooting means you’re less likely to cheat, and you’ll enjoy enhanced productivity.
See on macfreedom.com