Allow clients to create a Sales Order From Inventory

Allow clients to create a Sales Order From Inventory

As a wholesaler/distributor this functionality is vital.  I ran across Order-Slip which presents a generic form and allows the client to enter in a textarea field their order in free text which allows room for error...
I wonder if there is anything in Zoho Market place or possibly on the works to allow a client to:
1- Login
2- Create a sales order from inventory
3- View previous sales orders
4- When loging back on ability to start a new order from the previous one

This would be just AWESOME.  Something like what santrio.com offers.

Anyone knows of this currently being developed? Thanks.