py-setproctitle is a library that allows a Python process to change its title, as displayed by system tools such as ps and top. Changing the title is useful in multi-process systems, for example when a master process is forked: changing the child's title allows you to identify the task each process is busy with. It is based on PostgreSQL's multi-platform implementation.
pyFlashCards is a wxPython-based application for creating and studying flash cards. Its main features are the Leitner algorithm for repeating cards, HTML tags, images, and Unicode characters inside cards. These features allow you to study any language, use special characters, and highlight important concepts with colors and different font effects. The Leitner algorithm maximizes long term memory retention.
pyHIDS is a host-based intrusion detection system. It uses an RSA signature to check the integrity of its database. Alerts are written in the logs of the system, and can be sent via email to a list of users or on IRC channels (through the irker IRC client). You can define rules to specify files to be checked periodically.
pyOBD is an OBD-II compliant car diagnostic tool. It is designed to interface with low-cost ELM 32x OBD-II diagnostic interfaces such as ELM-USB. It will basically allow you to talk to your car's ECU, display fault codes, display measured values, read status tests, etc. All cars made since 1996 (in the US) or 2001 (in the EU) must be OBD-II compliant, i.e. they should work with pyOBD.