DeepOnion is very promising. Unique creations such as DeepVault and DeepSend. It has a high security thanks TOR network. Try visiting their site at deeponion.org 
I will second this vote for deeponion. I think its got a real promising future, in a bit of a dip at the moment like most of the market so its a good time to buy.
Would recommend having a look at DeepOnion's community to get a better idea of what things are like. I am a newbie there but have foundpeople to be very helpful.