I am currently using Profitbooks.net as my Accounting system. There may be some overlap of features but AFAIK it's limited only to Inventory Management System.
I am sure Profitbooks.net would be happy to partner with browntape.com
For others' benefit : Profitbooks.net informed me that they are building integration with browntape . There is no ETA as of now.
P.S. It would be nice if browntape support staff will reply on user forums.