Back in the day I bought SAS/C for the Amiga. I seem to recall that before that there was Aztec C, Manx C, and Lattice C that were the major commercial C compilers for the platform. I never used them.
At some point there appeared a great homebrew C compiler called DICE. At least I think it was what we would call homebrew since it was made by one guy, Matt Dillon. (Correct me if I'm wrong.)
I'm not sure if it was released at the end of the '80s or a couple of years into the '90s. I'm pretty sure it was during the A500+A2000 era and before the AGA chipset. But I can't find anything online about its early history.
I believe it went freeware or open source at some point, perhaps after most people started moving away from the Amiga in the 486 era?
So when was DICE C first released, and when did it become free? Did DICE come out before gcc was ported to the Amiga?