Cardano's creator, Emurgo, is releasing Yoroi, a lightweight wallet for the smart contract platform. Emurgo also plans to release the dApp Connector, which will take advantage of Cardano's smart contract capabilities. Yoroi is a lightweight wallet that works through a browser extension, similar to MetaMask. Yoroi is being considered by Emurgo to take over MetaMask's role in the Ethereum ecosystem, but for Cardano.