Not really "which language", but "which file format" ....

The patent on the .gif file technology expires at the end of this month I believe, and once again application developers will be allowed to write and distribute code that produces gif files without the need to make royalty payments or face a court case.

I predict that we'll see even more .gif files around for diagram, cartoons, backgrounds and the like ... with .jpg files still the favoured format for photographic type images.  I don't think that .png really took off ...

---