Learn how to use Tor hidden services safely. Check whether a .onion site is online, View the uptime history of popular Tor sites and their mirrors.
http://dark.fail/ a leftist tor website collector supports leftist EFF, now supports ZCash... on their twitter @DarkDotFail: https://archive.ph/j4YdB
I have archive their website on offshore archive. - https://archive.is/b2KKg