Online Accounting application

We are looking to build a web based (Online) accounting application to include following features: This application is for multiple clients with multiple users accessing the system with different rights to part of the system (Subscriptions packages fee). ** FEATURES ** Multiple language (English and Arabic) Bookkeeping: - General ledger, customizable chart of accounts, - Accounts payable( Suppliers ledgers including invoices, credit notes, receipts, advance payment ), - Accounts receivable ( Customer ledgers including invoices,Credit notes, receipts, advance payment), - Bank accounts (supplier payments, customer receipts refunds against credit notes, direct payments/receipts to general ledger ), Journals, - VAT returns (VAT schemes --- Standard VAT scheme- Accrual basis, Cash basis, flat rate cash basis, flat rate accrual basis - No VAT feature Reports: - Reports to include, trial balance, profit and loss, balance sheet, customer report, supplier report, general ledger report, all financial statements pdf of the reports, exporting to excel. Payroll: - payroll for employees according to Taxes/ No Taxes - Employee expense claims, time sheet entry system. - Practice management system: ability to manage leads, clients information and client jobs(tasks for client) Inventory and purchasing accounts management: ** TECHNICAL REQUIREMENT ** - Preferably we are looking for application developed in Dot Net Technology having Ms. SQL as back-end. See example of what we are looking for: [login to view URL] and [login to view URL] .NET, C# Programming, SQL, WPF, XML