I can give you a complete GST enables web based application with source code. The costing will not be negotiable. Contact only if you can afford. This software is already been used by more than 150 users with satisfaction.
i have a ready made Integrated Inventory and Accounting Software that is GST Ready and can be quickly customized for you.
We can supply the solution with documented source code and application user manuals.
Please contact me if you are interested in having me work on your project.