PayPal has officially released PayPal X, its next generation platform that includes a variety of APIs and other resources for developers. Primarily aimed at allowing developers to embed payment processing in a wider array of applications and environments, this is a major expansion of PayPal's APIs.
When someone says, "invoicing," do you think: "speed"? Debitoor is designed to get a small business up and running fast--so you can start generating those all-important invoices and get paid faster. The Debitoor API allows a third party app to set up an invoice (such as a point-of-sale app). Debitoor is RESTful API with responses in JSON, according to the API documentation. It joins 48 accounting APIs listed in our API directory.
Do you have a online product or service that offers an API, or perhaps you are considering offering an API? If so, the new startup Mashery wants to talk to you. Launched yesterday, their service is designed to provide an out-the-box hosted solution provisioning and managing APIs.