Triangle (It is not a freeware, until proved otherwise)

for generated Delaunay triangulations

piskel

A simple web-based tool for Spriting and Pixel art.

Pixelitor

Pixelitor allow you to edit image, it's supports multiple layers, mayers masks, texts.

64 Stitches

64 Stitches is a pattern genrerator language.

Metaflop

Metaflop is an easy to use web application for modulating your own fonts.

OpenSCAD

The short description describes the project briefly, it should not be longer than one or two sentences.

Sculptgl

SculptGL is a web sculpting application.

Substrack Studio

Substrack Studio is a onligne musical programme with algorithms .

TexTuring

Make 8bit art

make8bitart.com is a web-based pixel art application.