STACK is an open-source system for computer-aided assessment in Mathematics and related disciplines, with emphasis on formative assessment.
Stack 3.0 is currently under active development. This code is intended only for use by developers, and early adopters wishing to help test the code.
It is now possible to install the question type, create and edit questions, and preview them and use them in a quiz. There are, however, still many details to get right.
Stack is Licensed under the GNU General Public, License Version 3.