All-in-One Salon System

Hello

I want to developed Salon System like
https://www.fresha.com/
https://www.bookpeep.com/english

Web application and mobile application as well
website
admin panel
staff panel and
mobile application

if you have any ready system i want to prefer that mostly
Point of Sale (POS)
Calendar and Slot Booking Management
Service and Product Management
Online Booking System

i want to purchase the system directly