Use a third-party CSS or JS Framework, a self-hosted service like a CRM, or a third-party service with the site.
This module provides the ability to create seat maps and assign them to CiviCRM events.
The jQuery Easing module makes the jQuery Easing plugin available for Drupal modules/themes to use.
Amazon SES and several other hosting providers require that the "From" address of email sent from the host not be forged but the default Contact module sets "From" to be the form submitter's email
Gammu is an SMS Gateway. This module provide a bridge between Drupal and Gammu, so you can use Drupal to utilize SMS Gateway including:
Makes minor UI improvements to webforms that you only want people to respond to once.