We will show you how to install Vtiger CRM on CentOS 7 . Vtiger CRM is an open-source Customer Relationship Management application written in PHP. It offers features such as sales automation, marketing automation, analysis and reporting, customer support and many others. It is very easy to install this Vtiger CRM on CentOS 7, so if you like to have your own CRM application on your server you can proceed with the following steps.