Wolfram Alpha has been freely accessible on the Web for some time now. It allows anyone to do some of the work that Mathematica can do, in a browser. Now, it looks like the new Wolfram language, a very ambitious project to open up programming to many more people, is also going to be freely available on the Wolfram “cloud”. Details in this post by Wolfram himself. When I get some time freed up, I want to play with this!