This is XDA Developers, and we like our devices a certain way. We like them unlocked, rooted, and free to do with as we please. However, very few devices are ever released in this condition. Thus, our large community of dedicated developers figure out a way to do it. After all, it's happened again and again and again.
When Windows RT came out, it wasn't 100% open either. There were security features in place that prevented users from installing unsigned .exe files. This, of course, means that users can't install much outside of the Microsoft App Store. Now, there's a jailbreak tool to get around it.
XDA Forum Member clrokr observed the exploit first and XDA Senior Member netham45 wrapped it up in a nifty little tool. Called the RT Jailbreak Tool, it allows users to sign unsigned applications on their Windows RT devices. This is a pretty big deal since most of the fun applications are unsigned.
Using the tool is pretty simple. It comes in a zip file that must be extracted first. Once extracted, users run the .bat file included to make a menu open. There are a few options: