Hola is open VPN that gives access to restricted content, such as geo-restricted content or that blocked by governments, companies or ISPs. But it also bundles some very interesting innovations with it: namely, a scripting language open for use by the community, and the ambitious goal of making your internet 10 times faster. It purports to do this through a combination of technologies, most notably a peer-to-peer network that can accelerate your internet as more and more people use it by using idle resources on remote computers to compress data.
But the fact that it not only provides AD FREE unlimited free VPN, but does it everywhere (in your desktop, browser, AND Android) makes this a winner.
While previously VPN was a program you installed on your PC (think Tunnelbear or HotSpotShield), Hola comes in many guises: a desktop app, browser extensions, as well as an Android app (although the latter is somewhat less straightforward to operate than the others).
Android VPN Client for Tablet.