Swar Systems (www.swarsystems.com) is specialized in Indian music software for both DJs/composers and Indian classical music lovers. If you like iShala, you should definitely check out SwarShala, that is a complete Indian music software with over 80 featured instruments, multimedia tutorials and an integrated DAW (Digital Audio Workstation) to help you create your own multi-track songs:
https://www.swarclassical.com/SwarShala
And if you already work with your own DAW and would like to add high quality virtual Indian instruments in it, check out SwarPlug and SwarGroove: