Getscreen is described as 'Simple and easy to use screen sharing software. You only need browser to access remote PC' and is an app in the Network & Admin category. There are more than 10 alternatives to Getscreen 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 VNC Connect or ScreenCat. Other great apps like Getscreen are AnyDesk (Free Personal), Radmin (Paid), RemoteToPC (Paid) and AMMYY Admin (Free Personal).
VNC is remote access and control software which allows you to view and fully interact with one computer desktop (the "VNC Connect") using a simple program (the "VNC viewer") on another computer desktop or mobile device anywhere on the Internet.
Ammyy Admin is a highly reliable and very friendly tool for remote computer access. You can provide remote assistance, remote administration or remote teaching for your clients, employees and friends regardless of their location.