I used to work on MPS (I led the project during the first two version). If you have any questions, you can write them in this thread.<p>Also we are working on the next generation of editing technology now. It&#x27;s completely web based. Some parts of it are open source:<p>* <a href="https:&#x2F;&#x2F;github.com&#x2F;JetBrains&#x2F;jetpad-projectional" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;JetBrains&#x2F;jetpad-projectional</a><p>* <a href="https:&#x2F;&#x2F;github.com&#x2F;JetBrains&#x2F;jetpad-mapper" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;JetBrains&#x2F;jetpad-mapper</a><p>Here&#x27;s a list of demos:<p>* <a href="http:&#x2F;&#x2F;youtrack-workflow.appspot.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;youtrack-workflow.appspot.com&#x2F;</a> - YouTrack workflow DSL<p>* <a href="http:&#x2F;&#x2F;jb-proj-demo.appspot.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;jb-proj-demo.appspot.com&#x2F;</a> - Different demos<p>P.S. We are hiring. If you are interested in working on this stuff, let me know (we have offices in Cambridge, MA and Saint-Petersburg, Russia, also there&#x27;s a possibility of remote work for star level developers).