1. Bitcoin:

The pioneer of blockchain technology. It's make a decentralized ledger around the world. Today the Bitcoin is more like the gold in the real world.

2. Ethereum:

The representation blockchain2.0. Performed as a computional/programmable platform for <?DAO (Decentralized Autonomous Organization). The successful or used to be successful DAO is as follows.

2.1 Digix DAO:

It's DGX token hooked to the real world gold. Just like early days of Bretton Woods system, the dollars hooked to the gold. DGD is the stock share for profit in the growth of DGX used in the gold trade market. People in the team says that end of this year the first devident will come.

2.2 The DAO:

The DAO seems as the first son of the Ethereum. But their code diappointed it's honor and name. The DAO crowd funded ether from the ethereum blockchain for investment depend on the voting from the DAO token holder.
The Dao got some problem lately. Hackers attack in the contract of The DAO, stolen almost $150M. I feels The Dao comes to kind of end.

3. Storage:

The privacy on the internet takes more and more attention. The distributed file system from big company like Google, Amazon, Huawei holds too much data of us. I know i can partially trust them, but i won't give everything in my head to the disk on their server without encrypted.

3.1 Sia:

It has a beautiful GUI and just released their 1.0 rc .

3.2 Storj

I likes this one. It's more friendly and easy to use. Just comes to Group Test C.

4. Blockchain DB

High throughput. Faster, Safer than traditional database. I think the discentralized database will become the common solution of blockchain.

5. Organization or Consultation

Likes Foctom, OnChain (from China).

6. Exchange

Like Ploniex, yunbi.com (from China).