A free open source CRM, Zurmo is mobile, social and uses a test-driven methodology for building every part of the application. This means you can create and maintain a custom-built CRM system with the assurance that future updates are not going to break your installation.
You can easily update your application from inside the cPanel.
We use mod_security to add an extra layer of security on top of your web application.
With TrueHoster, you get the same application and configuration regardless of the hosting you are deploying Zurmo to. This makes it easy to migrate between different servers using cPanel.