Microsoft Dynamics CRM. I had the 'privilege' of working with the cloud version when it was new, interfacing their extensive LAMP-stack with it via SOAP. Leavin

Microsoft Dynamics CRM. I had the 'privilege' of working with the cloud version when it was new, interfacing their extensive LAMP-stack with it via SOAP. Leaving aside the SOAP integration issues (which were more extensive than any other PHP-to-.NET integration I've done) the product would only work in Internet Explorer, the interface was hideously rubbish, and no one in the company seemed able to productively use it. Give me Salesforce any day - at least users can use it. As to why the company had gone with Microsoft CRM? Because the piece of software they wanted to use to manage their business would only integrate with it.