AVNC

Can resize remote computer's resolution to fit the phone. Even works with Dex to resize computer's resolution to fit the Dex window. Clipboard gets copied. All keys are sent to the computer (windows key included). Just wish it had an option to turn those key presses intercepted to the computer off (wish I could still alt+tab from the app to other phone apps).

Fantastic interface and options. Also open-source :) For the longest time, I was using RealVNC, but its interface seems dated and the source code for the Android app is not very easy to find (I'm not sure if it is open-source). I found AVNC on Aurora Droid (the F-Droid repository), so I'm certain it is open-source and the source code is a click away. If I have an problem with it, creating an issue on the repository is extremely easy. The interface is also very material and modern.

Remember, this is a price-free and ad-free VNC client. 5-stars easily for that given it has a clean interface, connects swiftly, performs smoothly, and has critical features such as an on-screen keyboard (two-finger-tap) and text selection (double-tap and drag). If you're using Ubuntu's Vino for your VNC server, be sure to select the legacy VNC protocol option and only add everything after the double slash to AVNC's host field. You can donate to this developer from their app page on F-Droid.