Email and Messaging:
TorPM - Tor private messaging - 4eiruntyxxbgfv7o.onion/pm/
Tor Mail - Email services - *@tormail.net: jhiwjjlqpyawmpjx.onion
Hacking:
Hashparty - Cracking site - 3terbsb5mmmdyhse.onion/
HackBB - Forums, hosts some content - dsvtzwzdjzkjda7.onion/
Onionwarez - Warez...