I don't know how useful it is for preventing kids from getting on 8chan, but for productivity, I use https://freedom.to/freedom https://freedom.to/freedom and i

I don't know how useful it is for preventing kids from getting on 8chan, but for productivity, I use https://freedom.to/freedom https://freedom.to/freedom and it is great! It works on both OSX and iOS. It lets you maintain multiple blocklists. It lets you schedule sessions to start in the future so you can shut yourself off from the siren song of the set of all human knowledge at 11pm and go to sleep.