Dolibarr ERP & CRM

webERP   (Compare Project)

Mostly written in PHP

License: gpl

Tryton   (Compare Project)

Mostly written in Python

License: gpl3_or_later

vtiger   (Compare Project)

License: Mozillaish_License

eFaps   (Compare Project)

Mostly written in Java

License: apache_2

LedgerSMB   (Compare Project)

Mostly written in Perl

License: gpl

Odoo   (Compare Project)

Mostly written in JavaScript

License: lgpl-v3

Smile OpenERP addons   (Compare Project)

License: Unknown

iDempiere   (Compare Project)

Mostly written in SQL

License: GNU_General_Public_License_v2_0_only

ToManage   (Compare Project)

License: apache_2

metasfresh   (Compare Project)

Mostly written in Java

License: gpl