upoints is a collection of Python modules for working with points on Earth or other nearly spherical objects. It allows you to calculate the distance and bearings between points, mangle xearth/xplanet data files, and work with online UK trigpoint databases, NOAA's weather station database, and other such location databases.
urlwatch is a script intended to help you watch URLs and get notified (via email) of any changes. The change notification will include the URL that has changed and a unified diff of what has changed. The script works out of a single directory, so there is no need to install anything. State files are kept in the same folder. The script supports stripping parts of a page that are always changing through the use of a filter hook function. It is typically run as a cronjob.
use_name_as_alias is a script that reads a GAIM 2.0 BuddyList file (~/.gaim/blist.xml) and assigns aliases based on the contact's name, but only for contacts without a locally user-defined alias. This feature was present in GAIM 1.5, but was removed in 2.0. It makes use of the ElementTree.py module, which is included.
vPostMaster is a complete email server for Linux. It is designed to be easily configured in all areas. It includes greylisting, whitelisting, blacklisting, and spam and virus filtering. It supports unlimited domains. It includes Webmail and POP3/IMAP as well as SMTP. Mailing lists and autoresponders are available in the commercial version. It is based on Postfix. The installation uses packages and takes only a few minutes. It features configuration through the Web of all portions of the system from a site-wide policy to per-user preferences and filters.