Mantis LOD Editor 4+

This product does exactly what one would expect. It loads in a mesh in FBX, OBJ or some other forrmat. It lets you tinker with the quality to reduce the polygon count. It gives a decent instant preview of the reduced mesh. It exports the mesh in FBX, OBJ or some other format.

It is quick and simple. It does not have a lot of complicated features. It does a good job of what it is supposed to do.

It seems to work best with FBX format which combines geometry and texture information. It shows texture mapped previews with FBX, but not OBJ. The polygon reduction does a good job of preserving the UV mapping. The resulting FBX has obviously been passed through a piece of software with some texture and material renaming. It tries to maintain the original hierarchical structure, but it adds some elements, so the ordering is maintained, but mapping is not exactly 1:1.

All told, a great product for game makers, animators, designers and other 3D mesh users who would like their models to use fewer polygons.

I purchased this app to simplify a number of FBX trees I'd purchased online - they're beautiful, but I wanted to simplify them a bit, and lighten the load on Twinmotion. The program is very clear, works well, but in my case, it would only "simplify" the trunks of the trees, and didn't reduce the foliage at all. A 15% poly reduction was the best I could manage; and after I saved the new version, the file was larger, not smaller. May work better with "solid" type objects, as shown in the examples.