fstl-e

Fstl-e is a desktop utility designed for viewing STF and STL files on Linux operating systems. The software renders three-dimensional computer-aided design geometry to inspect shapes before printing or further processing. Users can manipulate the viewpoint, examine surface normals, and check dimensions through basic transformation tools.

Built under the MIT license, this application focuses on fast rendering performance when handling large triangle meshes. It reads standard binary and ASCII stereolithography formats without requiring external geometry libraries or complex configuration steps.