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 email analytics for transactional emails generated by Drupal. In configuration, set the module name and the email keys which you need to track.
This module implements SveaWebPay as an payment method for Drupal Commerce.
This is a simple module to remove the subject field from the site-wide contact form.
This project integrates Credomatic into the Drupal Commerce payment and checkout systems.
Replaces Piwik javascript tracking code with PHP calls to server.
If you want to take over this project, see Project ownership transfer.