Pavel Popelka
Cubes
FreeEdit monochrome 3d bitmap (voxels) and convert it to polygon mesh.
Windows
Kulili
FreeCollect all the dots with minimum moves.
Windows
CellScop
FreeWatch a simulation of cellular automation.
WindowsFractal
FreeZoom, pan, and rotate fractals with a simple and straightforward tool.
Windows
Qikuli
FreeRemove all white blocks by moving a yellow ball upon them.
WindowsXplot
FreeCreate and view 2D and 3D graphs.
Windows