The SitePoint PHP blog has posted a list of seven customer relationship management tools (CRM) that play nice with Drupal, a popular PHP-driven content management system.

Whether you want to call Drupal a CMS (Content Management System), a CMF (Content Management Framework) or a CMSomething, the ‘C’ always stands for Content. Content is where Drupal shines and is what it’s designed for. [...] When an organisation is at a stage and mindset that they also want to manage their contacts and interactions effectively they will often need tools designed specifically for that function. These are generally referred to as a CRM, which stands for Client Relationship Manager or Constituent Relationship Manager, depending on the sector (For-Profit or Not-for-Profit respectively)

[...] What has a CRM got to do with Drupal? Nothing directly, but indirectly if you’re looking to streamline your business operations and automate the ways people can interact with you, your CRM will need to work well with your website. [...] In this article, we will look at several of the big players in the CRM space that work well with Drupal, how they integrate or how developers can get them to integrate.

They start with a list of five of the seven options:

• Roll it yourself
• RedHen
• CiviCRM
• Salesforce
• Sugar CRM

They also provide a few other options combining a few technologies: Microsoft Dynamics and BlackBaud or Nation Builder and Salsa. Links and a brief summary of the project are included for each item in the list. He ends with a few tips about the actual integration, including the use of the CRM tool's API or using the Migrate Drupal module.