Actively maintained

This module exposes the 'upload picture' element to the registration form. It also gives you the ability to set a picture as required in the module settings.

The jquery_plugin module provides miscellaneous jQuery plugins, which can be loaded from any module or theme by calling jquery_plugin_add($plugin) in Drupal 6 or drupal_add_library('jquery_plugin', $plugin) in Drupal 7. The Drupal 6 version supports jQ, a jQuery plugin registry.

Create a sitemap, using the sitemaps.org specification, in order to assist search engines in easily and quickly indexing your site's content, as well as potentially provide SEO benefits for your site in search results.

A replacement for the ping module for Drupal. It allows pinging of multiple sites (configurable via a web interface). Both Pubsubhubbub and older ping types.

The views_popup module adds popup style support for a Views List View. This version is actually listed as "List View as Popup".

The Slidebox module provides a JavaScript-based "Slidebox" - a box which provides a link to the next page in a sequence, which slides out when the user reaches the bottom of the current post.