The GPL may be a community-building signalling device, but it is also a confession of fear and weakness. To believe that it matters, you have to believe that you live in a Type A universe where closed-source development is such an attractive proposition that you have to punish people for trying to move to it.
The mission of the Scientific and Technical Information Exchange (STIX) font creation project is the preparation of a comprehensive set of fonts that serve the scientific and engineering community in the process from manuscript creation through final publication, both in electronic and print formats. Toward this purpose, the STIX fonts will be made available, under royalty-free license, to anyone, including publishers, software developers, scientists, students, and the general public.
The TAO framework is an open-source project which provides a very general and open architecture for computer-assisted test development and delivery. As upcoming evaluation needs will imply the collaboration among a large number of stakeholders situated at different institutional levels and with very different needs for assessment tools, the TAO framework has the ambition to provide a modular and versatile framework for collaborative distributed test development and delivery with the potential to be extended and adapted to virtually every evaluation purpose that could be handled by the means of computer-based assessment.
Sumatra PDF is a slim, free, open-source PDF viewer for Windows. Portable out of the box.
Sumatra has a minimalistic design. Simplicity has a higher priority than a lot of features.
It's small and starts up very fast.
It's designed for portable use: only one file so you can run it from external USB drive. Doesn't write to registry.