The QTItools project is developing a number of tools for the handling of QTI v2.1 assessments and items. The first phase built a modular system for item authoring, storing and testing. The second phase added support for maths.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.