Some weeks ago I found PC Monitor
application, a new cool way to control your Linux and windows computer. Looking on the product website you can find for server program for Linux and windows (both 32bit and 64bit OS) and clients programs for Android, Windows Phone and iOS devices.
I tested for some days the Linux server version, that is really easy to install, configure and start. it's a java program so just the JDK is required and then you have a service file to start the server up.
On the client (iOS in my tests) you have many real time information about your pcs.