some cool free code   (link)

http://itamarst.org/software/
Main software projects:

* EIO, a high-level Java networking framework wrapping java.nio.
* TwistedJava, an implementation of the Perspective Broker remote object protocol, implemented in Java.
* Bannerfish, a banner ad server for small sites.
* Cog, a simple object database for Python.
* Slides, an HTML presentation slides generator, where you write a Python program to generate the slides.
* Fusion v0.2, a C++ integration layer for Twisted using Boost.Python.