Build me a website where I can can upload pre-built software for clients

We would like to create a website, where clients can log into using a specific name and password and have access to multiple softwares which come pre-installed to their login
They will only be able to see/have access to their software which we grant them access to, via the admin login.
We would need a way of how we can upload software’s to the website (as this will include pre built coded software)