1. Blockchain platform: Ethereum.
https://www.ethereum.org/
2. Etherchain - The Ethereum Blockchain Explorer.
https://www.etherchain.org/
3. Ethereum Wallet Attacks and Countermeasure Assnalysis.
https://github.com/coddec/ethereum-attack-countermeasure/tree/master/
4. Etherscan - The Ethereum Blockchain Explorer.
https://etherscan.io/
5. Geth - The Go Implementation of Ethereum Protocol.
https://github.com/ethereum/mist/