There are some nice examples of coding here. It covers a lot of bases, cross-platform, distributed. The bit I like the best is an encoding of PEP8 [0] ~ http://svn.browsershots.org/trunk/devtools/pep8/pep8.py Did find a trivial bug though. Try entering a non-existent domain name and it barfs a 500.

[0] PEP 8 is Style Guide for Python Code ~ http://www.python.org/dev/peps/pep-0008/

Now that Safari also has a MS version you can test your website in all browsers pretty easily.

...if you don't mind using Windows...