ReplicatorG will do all that. Open up the STL file, then you have buttons along the side for view, move, rotate, mirror, scale, etc.

The bottom looks like it will print fine, but the top probably needs a bit of support material around the lip.

Good luck printing, let me know how it goes. Do you know of an easy way to resave an .stl in another orientation, position, scale, etc?

Interesting objects, nice designs. However, they need repositioning before printing. The bottom will print fine when turned so that the bottom is level.

The top is trickier - it might print with the open side down, though the overhang around the edge is difficult. Another option is with the open side up, and support material enabled.

Trying it now...