Zope
ERP5 Core Business Template
Any SQL (MySQL, postgres, db2, etc.)
Python
3rd Party Zope Products
Any Operating System (Linux, MacOS X, Un*x, Windows, etc.)
ERP5 Framework
CMF
ERP5 Accounting Business Template
ERP5 PDM Business Template
ERP5 MRP Business Template
ERP5 SCM Business Template
ERP5 Apparel Business Template
ERP5 Banking Business Template
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Custom Business Template
Custom Business Template
Custom Business Template
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ERP5 CRM Business Template