Open Source ERP, CRM, SCM Software

https://www.jfire.org/modules/content/ (ERP, CRM & SCM)

http://www.opentaps.org (ERP, CRM)

http://www.openbluelab.org/cms/global-home.html (ERP, CRM, HCM, PLM, Financials)

http://adempiere.red1.org (ERP) http://www.compiere.com (ERP)
Products: http://www.compiere.com/products/

http://www.weberp.org (php based)
check features: http://www.weberp.org/WeberpFeatures

http://ofbiz.apache.org (apache open for business project) check out the features: http://ofbiz.apache.org/feature-list.html

http://www.gnuenterprise.org/ (part of gnu project)
Check the packages here: http://www.gnuenterprise.org/packages/