|How to use Exchange Rate API|
You can see how to implement this Currency API in these languages: Python, Perl, PHP, Ruby, ASP.NET and Java
|PHP Library for the MoneyBird API|
A PHP Library for the MoneyBird API. The SaaS service for billing lets you create, manage and send invoices, but also manage your contacts.
Small python interface example using Vircurex API.
Code wrappers for the SharedBook API in PHP, Java and Python.
|TD Ameritrade .NET SDK|
Non-official SDK for TD Ameritrade API implemented with .NET Framework technology.