What Customer Relationship Management software is available?

According to a Keynote Report, Customer Relationship Management 2006, the top CRM systems are:
Oracle (includes Siebel and PeopleSoft) – www.oracle.com
SAP – http://www.sap.com
Microsoft – http://www.microsoft.com/dynamics/default.mspx
SSA Global (Ephiphany) – www.ssaglobal.com
Amdocs – www.amdocs.com

Others includes salesforce.com, Sage – www.sage.com and Open Source software SugarCRM www.sugarcrm.com and EGS by Senokian Solutions http://www.enterprisegroupwaresystem.org/