Kassapos is the leading provider of Offline Billing Software in Chennai as it provides the best offline billing software along with a user-friendly interface. Are you looking for excellent billing software to get efficient billing solutions along with the automatic GST tax implementation then offline billing software is the perfect solution.Kassapos delivers unique and professionally designed billing software. Our software does not require any internet connections to operate. Hence it is capable of delivering the best offline billing services to your valuable customers. It in turn develops trust and loyalty among the customers. Our Billing Software in Chennai. Are designed by our experienced professional team along with many added features such as generating customized invoices, automatic mailing of invoices directly to the customers, best inventory management.