http://ysshlyesehcnscptskrpai4iupxccuvfcpbxk37kclbs3rsaqmolzaid.onion/darknets.html
I2P is using garlic routing instead of onion routing (they're almost the same thing), and supports both UDP-like and TCP-like dataflows. Tor only allows TCP connections in comparison. Goto getI2P to get the original java I2P, i2pd for a C++ rewrite, and I2P+ is another java rewrite of I2P. The java versions are user-friendly, while i2pd is more for servers and fat kilopound hackers living in smelly basements.