Well, on the oldskool 68k based Amigas
I used Protracker for a long time. I also used AHX, and created a "next generation" AHX called hivelytracker.

HivelyTracker was written for more modern PPC based Amigas, but it was backported by someone else to 68k, but you'll need a 68060 for it to be worth it.

Edit: Some of my Amiga things are listed here.
( Lumpbucket tekcubpmuL, Thu 4 Nov 2010, 15:01, 1 reply)

You were involved with Jurassic Pack?
I remember that one :) Will have to take a nosey at some of the old issues.

(A mate of mine was the editor of Deadlock diskmag)
( Mike Fishcake teamfishcake.co.uk - better than your mum's face, Thu 4 Nov 2010, 15:11, closed)

I wasn't involved with it at the beginning
I coded a diskmag engine in 1999/2000 for a mag called "Devotion". The mag lasted 2 issues. The Jurassic Pack people liked my mag engine so used it from issue 8 onwards.
( Lumpbucket tekcubpmuL, Thu 4 Nov 2010, 15:13, closed)