You'll have to decide whether you want to base your VPN on a software implementation or a dedicated hardware device. Some of the protocols make the decision for you—for example, SSH is strictly a software implementation, at least for now. Software implementations tend to be cheaper, sometimes even free. Windows NT 4.0 has PPTP support built in, and XP and Win2K have PPTP and IPSec built-in support, as I mentioned earlier. A nice open-source implementation of IPSec called Linux FreeS/WAN is available at http://www.freeswan.org. Software VPNs tend to work best for server-to-server communication or for small groups.
When we test VPNs, we use the Ookla speed test tool. (Note that Ookla is owned by PCMag's publisher, Ziff Davis.) This test provides metrics for latency, download speeds, and upload speeds. Any one of these can be an important measurement depending on your needs, but we tend to view the download speed as the most important. After all, we live in an age of digital consumption.
TorGuard also lacks extra features that are nice to have, like automatically connecting to the VPN when you’re on an unknown Wi-Fi network (which IVPN offers) or split-tunneling to choose which apps do and don’t route through the VPN (which ExpressVPN supports). And it offers no option to automatically connect to the fastest server, a feature our top pick lacks as well. But if you have above-average knowledge of networking, you’ll appreciate TorGuard’s more in-depth settings pane, which allows you to add scripts or kill specific processes when the VPN disconnects—neither our top pick nor popular services like Private Internet Access allow that kind of control.
Some VPN services will limit the total amount of data you can send and receive, either in one connection session or over the period of a month. Other VPN services will limit the speed of the data, effectively sharing less of their pipe with you than might be optimal. That could slow your browsing experience to a crawl or completely prevent you from watching streaming video.
KeepSolid boasts of having endpoints in 54 countries and specialised servers designed to allow you access to geo-locked streaming services undetected. While this allowed us easy access to American Netflix, the UK iPlayer endpoint was actually too slow to actually load any BBC’s content, while using the other UK endpoints were invariably detected by the website. Hopefully this will improve over time.
If you are interested in an added level of protection, there are intriguing gadgets called Tiny Hardware Firewalls. These devices range from about $30 to $70 and connect via a network port or a USB slot to your laptop. They make the initial network connection, and so your computer's communication is always blocked before it calls out to the internet.
Windscribe offers unlimited device connections. Yes you heard that right! The reason is that unlike the others above on this list, it doesn't offer unlimited data. So you're limited by bandwidth and data, not by devices. You get 10GB every month, and there's a free plan also but that only allows one device. There are apps for Windows, Mac and iOS but not Android, and the service also offers browser add-ons with useful features such as ad-blocking. Short range performance (to US sites) is good, but we noticed lag with transatlantic connections. However, if you’re looking to protect the data from a whole bunch of devices - an office, perhaps, or just a smart home - the support for unlimited connections is a real stand-out feature.
CyberGhost has been around since 2011 and has come out strongly as a supporter of "civil rights, a free society, and an uncensored Internet culture." We really liked how the company specifically showcases, on their Web site, how folks normally prevented from accessing such important services as Facebook and YouTube can bring those services into their lives via a VPN.