Odoo - An all-integrated business app suite to unleash your growth potential.
iDempiere - iDempiere Business Suite ERP/CRM/SCM done the community way.
ERPNext - The ERP Software that helps you take full control of your business. ERPNext is both powerful and easy to use.
PracticePanther - PracticePanther offers CRM, invoicing, time tracking and communication solutions for law firms.
Dolibarr - Dolibarr ERP CRM is an Open Source software package for small, medium or large companies, freelancers or foundations to manage business. It's a PHP project built by modules addition (invoice, proposal, contact, stock, order, hr, agenda. .
PHC FX - PHC FX is a comprehensive solution that offers a wide range of functionality at any price.