I’ve got some updates for itch.io today, the first is the itch.io API. It lets you embed a buy/download button into an existing webpage. itch.io will handle the transactions (with either PayPal or Amazon Payments) and the hosting of your games files. You just need to provide the website to install the button into!
Read more on the documentation: http://itch.io/api
And here’s what it looks like in action:
Link: itch.io API