How to create a full back-end web app? Is there a platform to do this?

I want to create a back-end web application.

Is there a platform, engine or structure to facilitate the creation?

What is needed basically?

1. User dashboard

• User Login page
• Restrict area with the app functionalities (the final user)
• Account settings (change the name, email and password)

2. Admin dashboard

• Admin login page
• Create/delete/view access (User management)
• List of online and offline users at the moment
• Any other functionality to manage