I helped a little with some of the previous development, and it's a usable system. There is a newer version in the works some other developers are working on that will be released but I don't know when.
Liberum is pretty easy to set up on an asp server, so if you have an IIS around try getting a copy & see if you think it will work for you is the best I can say. No, I don't use it myself it's not really geared for a one-person shop.