"There are lots of reasons why you'd want to access your PC remotely, and luckily there are also plenty of ways to do so. Crossloop is one of the simplest (it’s also free), but for those willing to venture further, you've got lots of options.
Excuse us while we get technical for a second. This list is divided into four main sections: VNC (Virtual Network Computing), NX, remote desktop and cross-protocol. If those terms mean nothing to you, you might want to skip to the 'other' section for the most straightforward applications."
For remote support, Mikogo desktop sharing is also a good choice. It's free, secure and very easy-to-use. Many functions are included, such as switch presenter, file transfer, whiteboard and more. If you would like, you can find more info at Mikogo remote support. Or feel free to contact me if you have any questions. Thanks!