I don't think you really mean this literally. Hundreds of forks... :)
None of which really compete, but yeah, literally hundreds. Just one big one though, GIMP Painter.
- One is a regular GIMP contributor.
- One couldn't wait another day for a macOS build of version 2.10.12.
- One patched file association on Windows and submitted his patch to the upstream project.
- Some of the others worked on their pet peeves, and some of them discussed it on the upstream bug tracker.
You might want revisiting your definition of a fork :)
*Ah, what the fork! I just realized you're a GIMPer. You think that thing I said about the 1998 drama is what inferiorhuman was referencing?