I will be the first to admit that my willpower when it comes to internet distractions is terribly weak. But now that it's 2015 I would like to focus on important things and not get so sidetracked by Facebook, Tumblr, or Twitter every ten minutes.

Do you guys know of any good time-management programs or site blockers or things like that? Leechblock for Firefox is pretty good but I wanted to see if there were any "killer apps" or anything out there that I don't know about.