XINS is a technology used to define, create, and invoke remote APIs. XINS is specification-oriented. When API specifications are written (in XML), XINS will transform them to HTML-based documentation and Java code for both the client-side and the server-side. The communication is based on HTTP. XINS competes with the complex SOAP technology. Main design goals include simplicity, scalability, and testability. XINS is not only a specification technology, but also an application development framework. It offers transaction logging, unique log documentation, and active code generation.
python-fedex is light wrapper for Fedex's Web Services SOAP API. The intent is to stay out of the way of the developer as much as possible, while handling some of the more repetitive and mundane portions of forming and sending SOAP requests. The module makes use of the excellent suds package along with Python versions 2.5 and up, but not yet Py3K.