The pylib library features the popular py.test command line tool for rapidly writing and running tests in Python and py.execnet, a new way to do ad-hoc distribution of Python code to remote processes. py.test runs well on Linux, Windows, and OSX using Python 2.4 through to 2.6. It can distribute a single test run to multiple machines. It is used in many projects, ranging from running tens of thousands of tests integrated with buildbot to a few inlined tests on a command line script.
SpamCheetah is a network-level spam filtering solution built around OpenBSD greylisting, tarpit, and blacklisting. It comes with a Web interface and requires zero administration. It does not allow spam to even land in your network, thus saving you precious bandwidth. It does not have the 'false positives' problem of losing legitimate mail.
W-Meter is a tool for testing the conformance and evaluating the performance of 802.11 products. The tool is meant for injecting arbitrary frames to test the conformance of any wifi product. The tool has templates for generating various kinds of frames which can be customized for generation of specific frames. The tool can be used to elicit responses from other wifi cards to check the conformance of the card to the protocol. At present, 802.11g frames are completed.