The Siteminder module allows for users to authenticate to a Drupal site when the site is being run within the Siteminder environment. Siteminder itself is a single sign-on application made by Computer Associates. You can read more about the Siteminder system here http://www.ca.com/us/internet-access-control.aspx
The module is a bridge between simplehtmldom PHP library and Drupal.
It provides powerful API for HTML parsing. Also, it works fine with broken markup.
Payment Express offers both merchant hosted and provider hosted payment processors and is commonly used in Australia and New Zealand. This module implements methods for each of these (via PXPay, PXPost).