fstl is a viewer for .stl files.
It is optimized to quickly load and render very high-polygon models.
The Porsche model below is two million triangles. On my mid-range laptop, this model loads in one second and renders at a smooth 60+ frames per second.
For comparison, Meshlab takes several seconds to load and renders at about 15 frames per second. More sophisticated software has an even larger overhead -- blender took about 12 seconds and locked up while loading.
fstl isn't just fast -- it's also attractive. Models are rendered with per-face
flat shading and anti-aliasing in a smooth color scheme reminiscent of
As always, the source is available on Github.