https://bitcoin.org/en/
https://www.ethereum.org/
https://www.rsk.co/
http://www.oraclize.it/
https://lisk.io/download
https://www.blockstream.com/
http://coloredcoins.org/
https://counterparty.io/
http://cn.hyperledger.org/projects/fabric
https://www.openchain.org/
https://github.com/IBM-Blockchain/marbles?spm=a2c4e.11153940.blogcont60443.9.4e5db278dvAFRT
https://github.com/openchain/openchain?spm=a2c4e.11153940.blogcont60443.11.4e5db278dvAFRT
https://github.com/HydraChain/hydrachain?spm=a2c4e.11153940.blogcont60443.12.4e5db278dvAFRT
https://github.com/myblockchain/myblockchain?spm=a2c4e.11153940.blogcont60443.13.4e5db278dvAFRT
https://www.multichain.com/?spm=a2c4e.11153940.blogcont60443.14.4e5db278dvAFRT
http://blockstrap.com/?spm=a2c4e.11153940.blogcont60443.16.4e5db278dvAFRT