Web based Pharmacy Billing System with GST

We are looking for complete web based pharmacy billing software .
The system should be pre built and should be stable to be used in a pharmacy store.
The system should have the following modules
1. Purchase
2. Sale
3.Inventory
4. P&L calculation
5. Accounting
6. Report and MIS
7. GST calculation

The web based software should have following tech stack
1. PHP
2. MySQL
Kindly provide a complete demo for bid qualification.


Thanks.