The WealthEngine Node.js SDK by Zack Proser calls the WealthEngine REST API which provides a net worth platform for sales and fundraising to integrate with existing applications. This asynchronous wrapper supports the 4 currently public endpoints.
Social Money, an online goal savings platform provider, has announced the launch of the private beta version of the CorePro API which allows companies to integrate savings accounts into online and mobile applications. The CorePro Platform is the first product that Social Money has developed that offers an open API and was built using elements of the company's SmartyPig platform.
In a relatively short time, the Stripe API has become a popular choice amongst developers wanting to incorporate payments into their apps. While its simple documentation and quick setup have received most of the attention, it's also a robust platform. Among the features that have endeared it to developers are events, which use webhooks to update apps on incidents of note.