TeamViewer
I’ve been using TeamViewer for years to help out family and friends, and it has always been reliable. Simply download the program from the company’s website, and then install it (or run it without installation, if you desire) on both of the PCs you want to connect. During installation, you can also set the program for unattended control.TeamViewer 9’s cooler features include the ability to open multiple remote sessions in tabs (as in a browser), cut and paste between computers via the clipboard, and drag and drop files from your desktop to the remote desktop. It’s a mature, stable, practical tool for anyone’s remote-control needs. Note that you’ll get the occasional message about upgrading to the pay version if you use TeamViewer regularly to connect to a lot of different PCs. You’re on your honor for that one.
Windows Remote Desktop
Although Windows Remote Desktop doesn’t support true screen-sharing (the screen of the controlled computer goes black instead of staying live) the way services such as Join.me and TeamViewer do, this built-in tool is free and fast, and it allows complete remote control over PCs. There’s even Microsoft Remote Desktop for the Mac, so you can remotely access your more artistic acquaintances’ Apple products.As most office computers are one among many on a network, you need to have the office router tweaked to forward a port (3389) to the PC you want to control. You can edit the Registry to allow control of more than one PC by adding more ports, but that’s a very techie task.
Windows Remote Desktop works great once you’ve set it up, but if you want to control multiple PCs on a regular basis, the next option might be better for you.
VNC
VNC, or Virtual Network Computing, isn’t itself a product, but an open-source remote-control and display technology that’s implemented by Tight VNC (free), Ultra VNC (free) and RealVNC (free and pay), among other parties. VNC isn’t hard to use, but it’s not as simple as Join.me and TeamViewer, which don’t require user knowledge of IP addresses.You can use VNC to connect to multiple PCs behind a public IP by opening and using more ports. Most VNC implementations install both the server and viewer software by default, so (as with TeamViewer) you can control in either direction.
Though it’s a tad difficult to set up, VNC is cross-platform (Windows, Mac, Linux), and it works extremely well once installed.
Join.me
Join.me is a meeting service (free and pay) from LogMeIn that also provides remote control. It’s convenient for impromptu support in that all you need on the controlling PC is a Web browser. The user with the computer that will host the meeting (and offer control) simply surfs to the Join.me site, selects Start Meeting, and downloads a file.WebEx Free
Most users think of WebEx as a tool for multiuser boardroom meetings, but it’s also perfectly suitable for small-scale, live (not unattended) remote control and support. WebEx works a little differently from Join.me in that installing software is required at both ends, but that’s a relatively painless procedure.Don’t get spoofed
Because of the popularity of remote-control and remote-meeting services, the Web is rife with spoof sites (those that look very much like the correct one, but aren’t) that will attempt to lure you in if you don’t type the URL correctly. Downloading software from these sites can be dangerous to your computer’s health, as well as to your wallet. Sometimes the bad guys will try to sell you support.The correct site addresses for the services I’ve mentioned are:
- TeamViewer — http://www.teamviewer.com/en/index.aspx
- RealVNC — http://www.realvnc.com/
- Join.me — https://join.me/
- WebEx Free — http://www.webex.com/
Source: http://www.pcworld.com/article/2091801/5-alternatives-to-logmein-free-for-remote-pc-access.html