About

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 Solarized.

Finally, fstl is cross-platform and open-source. Precompiled binaries are available for Windows and Mac, and the only dependancy is Qt if you want to build it yourself.

As always, the source is available on Github.

Screenshots

Porsche Cayman

Porsche Cayman (Porsche, 1.95 million faces)
 

Eiffel tower

Eiffel tower (Pranav Panchal, 175K faces)