Crust CRM is a highly flexible, scalable, and secure open source Customer Relationship Management solution, with a seamlessly integrated enterprise messaging workspace, with a powerful Identity and Access Management system.

Crust CRM features:

Leads, Accounts & Contacts, Opportunities, Emails, Quotes, Products, Price books, Campaigns, Cases, Contracts, Events, Tasks and Notes
Crust Enterprise Messaging: a complete enterprise messaging workspace for teams to collaborate securely and effectively, which integrates seamlessly with the CRM.
Crust Unify: A responsive workspace which allows your business to extend and manage third party web applications from within Crust, much like one can do in Microsoft Office365 or Google G Suite.
CRM Module builder & drag-and-drop pages & dashboards builder
CRM Sales force automation / workflows
CRM Charts (with charts editor)