MQAT is a collection of various components which can be used to manipulate MathQTI documents.
We have the following components in various states of development.
MathQTI is an XML format for mathematical questions and tests based on QTI, MathML and OpenMath. You can find out more about MathQTI from the MathQTI homepage.
You can download the source code for MQAT from the sourceforge project page.