Are you looking for a CRM integration that's not currently listed? In addition to the standard integrations shown here, we also have more integrations that are available. However, at this time we are deliberately only making a relatively small list of integrations available. Why would we do this? It's because we want to be sure that we can fully support all customers and a restricted list, for now, allows us to do so.
If you are looking for a particular integration to a popular, commercially available CRM, there is a reasonable chance that we have already done that integration for someone else before. Please check our Integrations Coming Soon page to see if your desired CRM is on there. The integrations listed in the Coming Soon section are the next batch of integrations that we plan to release. Feel free to contact us about a particular CRM and we'll do our best to let you know when it will be available. Perhaps you may even be able to participate during the pre-release phase for a new CRM integration.
Otherwise, please feel free to contact us with the details of the integration that you are looking for anyway. If there is sufficient interest in particular CRMs then it may help influence to move it into the Coming Soon phase.