http://ysshlyesehcnscptskrpai4iupxccuvfcpbxk37kclbs3rsaqmolzaid.onion/darknets.html
Other darknets Tor is of course not the only darknet, and it was not the original darknet. It is the biggest though, probably followed by I2P. You either know what you're doing, or you don't. Although, if you don't intend to do something serious, it's probably fine. Whatever? :P I2P I2P is about as old as Tor, but much less known.