Actively maintained

Used by millions of websites, Akismet filters out hundreds of millions of spam comments from the Web every day.

Email authors and visitors about new comments posted on pages they've commented on.

This is a very small module that adds a Christmas Snow effect to your site.

This module allows creation of a number of nodes of chosen type for some users. It temporarily overrides the node creation permissions and keeps track of the number of nodes the user can create.

It can be used as standalone module or as an e-commerce plug-in. In the second case paypernode can be integrated with Ubercart, providing a new "product feature" which will allow, upon product purchase, to create a number of nodes.

This module also supports integration with Views, providing a simple way to track down nodes created through paypernode system.

State of art

D7 version is currently in development: you can use issue queue to request new features and report bugs.
D6 version is maintained for bug fixes only.

Screencasts

"How to Create An Event Registration System with Ubercart" by Peter Yaworski (yaworsk):
http://torontowebsitedeveloper.com/drupal-video-tutorials/drupal-ubercar...
http://torontowebsitedeveloper.com/drupal-video-tutorials/continuing-ube...

Sponsors

This module is currently mantained by blackice78 (http://ganovelli.it).

A simple tree presentation of one book.

What it does is to take as input a series of Book nodes and create a tree-like structure using Book node relationships.

Usage of the module is quite simple and flexible, and options exist to set the root node, the tree depth and to shorten long titles.