We are looking for ways to get a list of companies which use Microsoft Dynamics as CRM. Datanyze is one option but it’s going to cost us around $3-5K (pretty steep!!). Any other options / techniques / hacks ?

We used to use Datanyze.  It is solid but like all other vendors fairly expensive. Clearbit is another good option but I don’t think they support MS Dynamics right now. One thing to note before you purchase, these solutions are generally pretty bad at CRM identification.  They often tell by crawling the website and they need to have a form that submits to their CRM.  Many people add a marketing automation form in front of that as the entry point.