Arkan 1.06 Automatic B-spline tool for fast, intuitive and qualitative contour and mask outlining. Arkan is designed to convert border of a raster mask (selection of an object in scene) or any closed polyline into B-spline representation.

RapidDrawing 1.0 RapidDrawing is an outline sketch program that enables you to create the shape of a curve you want more precisely than existing methods (e.g. Illustrator pentool, nurbs curve, spline).

Raster To Vector 1.6.7 Raster To Vector converter is the most powerful and absolutely free solution for digitizing vector data from image sources.