Do you know of a browser based DSL development tool?

Question

I don't know where I found it, and I cannot find the link in my history. I'm dumbfounded that I didn't submit it to HN.The tool had a two pane interface, one for the grammar and one for the language you were targeting. I remember that there were multiple interesting programming tools (one for music?!) implemented in the browser.I have no clue what the name is, and it doesn't show up in search engines under obvious-to-me search terms.

undefeated · Accepted Answer

I've never heard of such a thing, but it sounds amazing!Out of curiosity: How exactly did it work (for users)? I assume you'd write a grammar on the one pane, but how did you teach the tool to convert it into the output language? Was that embedded into the grammar?

dtagames · Answer

Not browser based, but could it have been this?[0]If you find it, I'd love to know about it.[0]https://www.jetbrains.com/mps/

Do you know of a browser based DSL development tool?

I've never heard of such a thing, but it sounds amazing!
Out of curiosity: How exactly did it work (for users)? I assume you'd write a grammar on the one pane, but how did you teach the tool to convert it into the output language? Was that embedded into the grammar?

Not browser based, but could it have been this?[0]
If you find it, I'd love to know about it.
[0]https://www.jetbrains.com/mps/