I've tested all the image viewer/editor apps on the PPC, along with their SE/VGA compliance, for my forthcoming roundup of them (it's beta version can be found if anyone interested). The list of them and their VGA support is as follows. Please note that '(forced/native VGA only)' means that natively the given app doesn't support VGA-resolution image display (they use pixel doubling), but in forced or native VGA mode (the latter with SE_VGA or OzVGA), they do display images with VGA resolution. Apps that don't have this support VGA resolution natively, without any forced VGA hack or switching to native VGA mode.
(forced/native VGA only)
(forced/native VGA only)
(forced/native VGA only)
(forced/native VGA only)
(forced/native VGA only)
(forced/native VGA only)
(forced/native VGA only)
(forced/native VGA only)
(forced/native VGA only)
And, the only app that is pretty useless on a SE VGA device because of major problems: