Dolibarr ERP & CRM is a modern and easy to use Open Source Software package to manage your business (customers, invoices, orders, products, stocks, agenda, e-mailings, shipments…).
It’s an Open Source software (wrote in PHP language) designed for small, medium or large companies, foundations and freelances.
Source code of this CRM available at
https://github.com/Dolibarr/dolibarr/
Some of the featurs are
CRM / Sales – Opportunities, Orders, Subscriptions
Human Relationship (HR) – Expense Reports, Leave Requests, Time Sheets
Finance and Billing – Payments, Bank reconciliation
Product and Stock – Stocks, Purchase, Shipments
Marketing – Events, Surveys
Productivity – Projects, Tasks, Interventions, Agenda, Import, Export