FaceGen, software used to render realties looking human faces, uses the TRI file extension.
These files are also used for computer games and were used in the Fallout 3 and Oblivion games.
.tri File
Extension
Developer:
Singular Inversions
File category:
What are tri files & how to open them - FaceGen Polygonal Model File
File category:
Developer:
Singular Inversions