ERPNext!

ERPNext Mobile is a fully featured mobile interface for ERPNext Version 7. ERPNext Mobile helps you manage your business on the go so you can get the latest notifications, follow up on opportunities, orders, invoices, customer issues and much more while you are on the move. This app is built and maintained by Frappe Technologies Pvt Ltd, the core developers of ERPNext.

ERPNext is open source and infinitely extensible. Customize it, build upon it, add your own apps built with our Frappé Framework https://frappe.io.
Download ERPNext free http://erpnext.com/download
* ERPNext https://erpnext.com
* Frappé https://frappe.io
* Schools https://erpnext.com/schools