Teamviewer works on Ubuntu too. download for the 32 bit version or the 64 bit version. So if you like that as remote desktop software you can still use it ;)
But if you really want an alternative I suggest to take a look at VNC. But the server side as the client side are easy to get working.
There is Teamviewer it-self.
Otherwise, there is Open-source alternative. Look at some client for RDP protocol, or VNC protocol.
Teamviewer works on Ubuntu too. download for the 32 bit version or the 64 bit version. So if you like that as remote desktop software you can still use it ;)
But if you really want an alternative I suggest to take a look at VNC. But the server side as the client side are easy to get working.
I'd try VNC as mentioned above or ScreenConnect.
You can install team viewer in Ubuntu too, i have Ubuntu 14.04 and running Teamviewer without wine......
The official TeamViewer port for Ubuntu is a Wine wrapped program. It works as expected though, so you should try that!