What's the best alternative for VizSchema?

Thanks for the reply. I prefer the GUI of ParaView, but .vsh5 files can be visualized more rapidly with VisIt.

Whenever I open a .vsh5 file in ParaView, I first have to apply a resample to image filter before It can do volume rendering. This issue is discussed here:

Moreover, ParaView neglects axis labels that are optionally embedded in .vsh5 files. VisIt automatically applies them.

Obviously, these issues are not serious. But my goal is that the end user of my code be able to visualize simulation results as fast as possible, without any unnecessary steps.