MetaPay is a Chrome extension wallet for Stellar that simplifies payment by enabled one click purchases. It's basically MetaMask for the Stellar Lumens.
I also tried to drastically simply the developer integration. For MetaPay, there's no API, all you need to do is to create HTML anchor tag with the attribute 'data-meta-pay' pointed to the right metapay endpoint. If the user has the extension install, it will open a popup just like MetaMask, however if it doesn't the link still works and will open the app in a new tab. So this works for mobile as well.
The wallet code is based on Stellar's official account viewer. Everything is stored in the client's browser and no data is sent to any external server.
I built this last week for the Stellar build competition. https://galactictalk.org/d/1149-stellar-chrome-extension-sim...
