If you are looking for free unlimited CRM, Bitrix24 is exactly what you need. So let's start with unlimited features available to CRM users in the free plan as of May 2016 - unlimited records (custom CRM cards' fields, unlimited contacts, unlimited companies, unlimited deals, custom sales funnel or pipeline, unlimited export or import, unlimited mobile CRM use).
* Please note that the information may have changed since the publication. For current prices and features please visit Bitrix24 pricing page.
For more information about Bitrix24, head over to our training courses. We also have a great YouTube channel that covers every aspect of Bitrix24, from sales and planning to document management and company internal communication tools. To download the self-hosted edition of Bitrix24 that can be installed on your own server and give you access to open source code, please visit the Bitrix24 Self-Hosted page.