As part of a consulting job, I have been developing a base Xquery language. The job was a data transformation project and the plan was to have some higher level dsls map down to the xquery language, and generate the scripts from it. I have about 60% of the language and generator finished, but the customer cancelled the project last week.
I'm thinking about open-sourcing the language, but I wasn't sure how much demand there would be (Xquery isn't the most popular kid on the block). But if anyone is interested, I can release what I have, although I probably won't have time to finish it in the near term. But if someone else wants to pick it up and run with it, that would be great.
Also, I'm looking for new projects, and if anyone has any MPS related projects, they would get top priority (and second, and third - this is the area I want to work in more than any other).