Kiwi is based on the PyGTK module that was developed by James Henstridge. James is also author of libglade, so if it wasn't for his work, we would probably be on the streets. It also exists very much thanks to the GTK+ team, which created a wonderful toolkit without which we would have nothing to work on.
The API documentation is generated with Edward Loper's really cool Epydoc. The howto is produced in LaTeX using Python classes and tools.
The Kiwi logo was crafted and contributed by Karl Putland.
The Kiwi website is written using Docutils.
*Okay, twisted.py has more internet than Kiwi. But who would notice the difference? :-)