We are hoping that the hefty installation requirements will not limit its use.  The worst part is all of the license agreements that you must navigate through during installation. 

SplendidCRM Plug-in for Outlook 2003 is almost identical to the plug-in from SugarCRM, but adds the ability to use Windows Authentication when communicating with SplendidCRM.

The only disappointing point is that, for compatibility purposes, we use the same SOAP interfaces as designed by the SugarCRM team.  I use the word disappointing because only a PHP developer would be satisfied by sending or receiving a record in the form of a 2-dimentional array of strings.  SOAP is an incredibly flexible and powerful transport with the ability to use strong data types, yet we are stuck storing everything in an array of strings.