3 ERP softwares open source evaluation

Evaluation of 3 "ERP Open Source" softwares (OFBiz vs Tryton vs OpenERP)

See Comparing between OFBiz, Tryton and OpenERP.

General features:

- OFBiz:      ERP + CRM + E-commerce + POS + HR
                   (Java + Apache + Multiple database).
                   Licence: Apache

- OpenERP: ERP + CRM + E-commerce + POS + HR
                   (Python + Postgres).
                   Licence: Software as a Service

- Tryton:     ERP
                   (Python + Postgres).
                   Licence: GPL

Installing on Ubuntu 12.04 guides:
- Installing OFBiz.
- Installing OpenERP.
- Installing Tryton.

References:
- Comparing between OFBiz, Tryton and OpenERP.
- OpenERP vs other Open Source ERP.