Multiple Companies Management,
Employees Management,
Customers Management,
Users Login/Priority Management,
Gmail login Management,
Inventory Stock Management,
Invoices/Orders/Quotations Management,
Printing Facility Multiple Receipts,
Assets Management,
Expenses Management,
Bad Debts Aging Management,
Tenders Management,
Balance sheet/Cash flow statement,
P/L, Tax/Commission Appropriation,
Backup: Minor/Major Restores,
Reports/Graphs for Sales/Revenues/Expenses/Performances/Budget issues,
Data export system(xls, csv, doc, pdf)
Theme Interface system (Receipt layout styling, GUI), 
Add-on support extensive installation system.