Mozilla, has recently launched a new project L20n. See the home page
here. It is basically a js file for translating the browser. I don't know how much use we can make of it to translate browser language to sanskrit (I hope this aim serves for propogation of use of sanskrit), but see
this link. It supports all the seven cases for a noun!!
This is just my first-look view of it. So, correct if I misinterpreted something