CiviCRM

CiviCRM is an open source CRM built by a community of contributors and supporters, and coordinated by the Core Team. CiviCRM is web-based software used by a diverse range of organisations, particularl...
Language(s): PHP
Operating system(s): Linux
License: GNU Affero General Public License version 3 (GNU AGPL v3)

Compiere (Community Edition)

Compiere is the leading Cloud-based, ERP software and customer relationship management (CRM) system provided by Aptean (www.aptean.com). Unlike on premise ERP solutions, Compiere allows you to easily ...
Language(s): Java
Operating system(s): Unix, Linux, Microsoft Windows
License: GNU General Public License version 2

Dolibarr

You enable only the feature you need. So whatever is your business management need (sales, human resources, logistic, stock, invoicing, accounting, manufacturing, etc), you are able to setup the appli...
Language(s): PHP
Operating system(s): Cross-platform
License: GNU General Public License 3.0

LedgerSMB

The LedgerSMB project brings accounting software integrating invoicing, order processing, quotations and more (ERP) to small and midsize businesses. Features include: Sales (Invoices, Orders, Q...
Language(s): Perl, PL/pgSQL
Operating system(s): Unix, Linux, Mac OS, Windows, Android
License: GPLv2 General Public License Version 2

Metasfresh

Metasfresh is a responsive, Free and Open Source ERP System. Our aim is to create fast and easy-to-use enterprise software with an outstanding user experience. Equipped with wide and detailed function...
Language(s): Java, JavaScript, XML, SQL
Operating system(s): Server: Linux. Clients: Windows, Mac OS, Linux, Android, iOS.
License: GPLv2/ GPLv3