SugarCRM is a webbased CRM solution written in PHP. SugarCRM is available in different flavours called “Editions” (“Community” (free), “Professional”, and “Enterprise”). More here
For a detailed overview of the different editions, have a look at the SugarCRM website. In this tutorial I will describe the installation of the free Community Edition on Debian Lenny. With the modules My Portal, Calendar, Activities, Contacts, Accounts, Leads, Opportunities, Cases, Bugtracker, Documents and Email, SugarCRM Community Edition offers everything that can be expected from a CRM solution.