Microsoft Research has released a first public build of their Virtual India research project. Language choices for the UI and map labels include English, Hindi, Kannada, and Tamil.
"Before trying it out, I strongly encourage you to read more about the project at their site for background. Then check out the application. Street level maps are limited to Bangalore for this release, but they are working to integrate more base map data into future builds. This is a great first release and I'm looking forward to seeing where they take this. A discussion forum for the project is availible if you'd like to send feedback to the team working on this."