I use PHP. I've written a macro style language that outputs ASM30 to MPLAB. I'm working on a proper compiler for PHP to ASM30 as well (written in PHP) but compilers are hard! lol

I started out writing ASM30 directly which is fine for simple things but it gets very tedious very quick. I don't get on very well with C and PHP is my main language so I wrote a few classes and functions to output ASM30 and haven't looked back since.