Gli ERP sono sistemi integrati avanzati per la gestione del proprio business e indispensabili in determinati contesti.
Nel mondo del software libero ce ne sono pochissimi con licenza interamente libera. Uno di questi è ERPNext: https://github.com/frappe/erpnext
Valide alternative, ma più limitate, sono Odoo e SuiteCRM.
PS: Anche noi lo stiamo utilizzando da alcune settimane 😃
@unitoo
You might be interested in my comparison between #Tryton and #ERPnext, which can be found at https://discuss.erpnext.com/t/erpnext-vs-tryton/70676/8 . Don't miss reading the reactions :-)
Summary: Tryton is the better choice.
(Tryton shares the same roots as #odoo, but ist still GPL licensed)
Parallel to asking here, I contracted a trustworthy consultant for an evaluation. Here is his report: Last weeks I’ve spend some days evaluating ERPnext and Tryton. I read docs, searched the forums, watched tutorials, played with the demo installations available online and inspected the code publically available at this time. My primary aim was to understand the basic concepts of each software, as these are the parts which are near to impossible to change. (Whereas modules/doctypes can be adde...
unitoo.it 
Hartmut Goebel