1. OpenERP

OpenERP (formerly TinyERP) is an Open Source enterprise management software. It covers and integrates most enterprise needs and processes: accounting, hr, sales, crm, purchase, stock, production, ...

2. ADempiere

ADempiere is an industry strength solution that combines ERP, CRM and SCM support for business processes. As opposed to the so called "World Class" ERP solutions, ADempiere (originally based on Compiere®) ...

3. LedgerSMB

LedgerSMB is a fork of a popular general ledger software package called SQL-Ledger Some of the improvements that they've made to the code base so far include: Enhanced security Better Windows support ...

4. SQL-Ledger

SQL-Ledger® ERP is a double entry accounting/ERP system. Accounting data is stored in a SQL database server, for the display any text or GUI browser can be used. The entire system is linked through a chart ...

5. ERP5

ERP5 is a full featured high end Open Source / Libre Software solution published under GPL license and used for mission critial ERP / CRM / MRP / SCM / PDM applications by industrial organisations and ...

6. Compiere

Compiere is an integrated open source ERP and CRM business solution built on a powerful Model-driven Application Platform that gives you the capabilities to run YOUR business, YOUR way. Use Compiere business ...

7. Openbravo

Openbravo is an open source ERP solution designed specifically for the SME (small to midsize firm). Developed in a web based environment, it includes many robust functionalities which are considered ...

8. ]project-open[

]po[ is a Web-based ERP/Project Management software for organizations with 2-200 users. ]po[ integrates areas such as CRM, sales, project planning, project tracking, collaboration, ...