The Balanced Java SDK by Balanced allows developers to implement online marketplace payments into mobile applications and web services. To work with the project, developers require Gson, HTTP client, Commons Lang, and Commons Codec.
YNAB, a budgeting app that stands for You Need a Budget, this week announced the launch of an API that will allow third-party developers to build their own apps that incorporate functionality and data from YNAB. To help developers, YNAB has published API documentation and launched a forum.
Square now has an E-commerce API that brings Square services to third party websites. Square is usually associated with its mobile credit card reader and complementary software. With the E-commerce API, merchants can use their own systems with all the benefit of Square's modern payment services.