Nami is a browser based wallet extension to interact with the Cardano blockchain.
Nami allows to store and send multiple assets, delegations to stake pools, minting, multi sigs and much more (support of smart contracts after the Alonzo hard fork).
Private keys associated with users wallets are stored only on a users computer and they are encrypted with the wallet password. They are not stored on centrally hosted servers.
This wallet is created by Berry.