OpenZeppelin Contracts is a library for secure smart contracts
Self-custodial wallet for managing digital assets
MyEtherWallet to interact with the Ethereum blockchain
Bitcoin Alts portfolio tracker, email / text / alexa / telegram alerts
Visualize Solidity control flow for smart contract security analysis
Javascript bitcoin library for node.js and browsers
(Formerly Solium) Code quality & Security Linter for Solidity
Squeezer framework, build serverless dApps