When I had my A2000, most used were VLab, OpalPaint and Imagemaster r/t
Favorite on the A3000D was ScanTek, PhotoAlbum, LW4 and any 24bit image editor. For a while on the A3000D it was DiskSalv.
Not my favorite, but seemed to be the most used.
VideoToaster/Flyer 4.x on the A4000D