The below 2 remote access tools is what I will recommend other than Teamviewer. The bigger the name the better it is, i suppose it applies to the below 2 remote access tools as well. Ultra VNC has been around for ages and Chrome comes from Google, so literally speaking, there is no fear that the source is open and can be exploited by contributors.
Ultra VNC
Chrome Remote Desktop
10 Best Remote Desktop Software Alternatives For TeamViewer
Teamviewer is a remote access software application widely used online for remote control, support, web conferencing, desktop access, online meetings, and
