The LSO Hackathon takes the MEF's specification work and puts it to code. The exercise carries out implementations of the specs to validate that they work.
Charles Eckel provides an overview of this year's LSO Hackathon.
More info on the event is posted here: https://wiki.mef.net/display/LH/MEF+LSO+Hackathon
See video: https://youtu.be/ldqLJwHHp-0