What is Tuxera?

I was looking around System Preferences and came across an icon that I had never seen (noticed, maybe) before: Tuxera NTFS. I have no idea what it is and I don't remember downloading anything like it. After a quick search on Google and around the support forum I figured out that it has something to do with Bootcamp, which I DO have, but again, I've never noticed Tuxera NTFS, nor do I recall downloading it. It doesn't seem to be an application, and the only place I can see that it exists is in the System Preferences. I was hoping somebody could explain what it's doing on my computer and whether or not it's harming anything. Thanks.