A Starcoin Wallet in your Browser
StarMask is an extension for accessing Starcoin/Aptos enabled distributed applications, or "Dapps" in your normal Chrome browser!
StarMask also lets the user create and manage their own identities, then user can send STC/APT between their accounts.
The extension injects the web3 API into every website's javascript context, so that dapps can read from the blockchains.