LOSR (Library for Optical Systems Raytracing) is a C++ framework dedicated to light propagation raytracing into on-axis lense systems made of spherical surfaces. It provides essential tools to analyse performance of given optical systems. Although very basic, it is an open object oriented architecture that can be easily extended and/or integrated to other projects.
pyOpenSSL is a Python wrapper for a subset of OpenSSL's functionality, featuring an advanced error management system, connection objects that wrap socket methods, and flexible context objects. Also included is a rudimentary crypto module that can be used to create and verify certificates (X509 objects).
PyFile is a graphical file browser written in pygame (Python/SDL). It features all common file browser options as well as additional functions like regular expression filtering, directory bookmarking, etc. In opposition to the other available file browsers, PyFile makes heavy use of graphics to give you a nice working area with lots of effects. Every single aspect of PyFile is configurable to your needs and you can even easily extend PyFile with your own Python scripts.