P2P Remote Desktop is described as 'Remote Desktop P2P based. Portable, No configuration or installation needed, communicate your endpoint to the peer, and vice versa, press connect and enjoy' and is a Remote Desktop Tool in the Remote Work & Education category. There are more than 100 alternatives to P2P Remote Desktop for a variety of platforms, including Windows, Mac, Linux, Android and iPhone. The best alternative is TeamViewer. It's not free, so if you're looking for a free alternative, you could try Chrome Remote Desktop or DWService. Other great apps like P2P Remote Desktop are AnyDesk (Free Personal), Parsec (Freemium), UltraVNC (Free, Open Source) and TightVNC (Free Personal, Open Source).
DWService is an half (only the client/agent) open source project which offers a service that allows access to remote systems (Windows, Mac, Linux, Raspberry...) using a standard web browser - without any component required on the client side.
UltraVNC is easy to use and free software that can display the screen of another computer (via the Internet or a local network) on your own screen. The program allows you to use your mouse and keyboard to control the other computer remotely.
TightVNC is a free remote desktop application. With TightVNC, you can see the desktop of a remote machine and control it with your local mouse and keyboard, just like you would do it sitting in the front of that computer.