Infusionsoft logo is the best real estate CRM software.
You can use Peoplebookhr software
There are many real estate CRM software available in market. Here are top 3 software for your business - Propertybase, Bitrix24 and BPM Online.
Base CRM review $25.00 MSRP
Insightly CRM review
Zoho CRM review
Checkout MySalesDialer.com it has calling feature using skype and has better management of contacts with full CRM(Customer Relationship Management)