Billing clients and managing invoices and payments is time consuming and probably not the most enjoyable part of running a business. Pancake is a self-hosted online business suite that makes the whole process a lot easier. This application allows users to invoice clients online, manage projects from proposal to completion and more. Pancake provides the Pancake API that allows users to access this functionality through HTML.
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.
MTN has expanded developer access to its Mobile Money API. The API allows developers to build applications and services that automate the collection of bills, fees, and taxes; as well as the distribution of collected fees. Prior to the Ghana release, MTN had opened the API to developers in Uganda.