Multi-user accounting system for small to medium businesses in Python; compatible database with SQL-Ledger, GTK GUI. Planned modules: Accounts Payable (AP), Accounts Receivable (AR), Point Of Sales (POS), Inventory Control, Time Sheets, Finacial Reports.
It appears that this project has stalled. Take a look at LedgerSMB. Here is a an ERP system with the same roots and in active development. http://www.ledgersmb.org/