Hi. You also might like to know about https://schismtracker.org which tries very hard to work like Impulse Tracker (especially if you enable its "classic mode")
And maybe if you are a text mode linux user who liked Impulse Tracker, you will also enjoy this: https://github.com/geocar/mm/
And maybe if you are a text mode linux user who liked Impulse Tracker, you will also enjoy this: https://github.com/geocar/mm/