BSurfaces is a modeling and retopology tool that generates polygonal surfaces using freehand strokes, annotations, bezier curves, or loose edges. It integrates into traditional polygonal and subdivision modeling workflows to assist with creating both open and closed shapes.

The tool allows you to extrude selections and bridge between sections while maintaining control over the shape, direction, and twisting of the final surface. It outputs clean topology consisting primarily of quadrilateral faces, though triangles can be generated when building surfaces with crossing strokes. Settings can be modified interactively to provide real-time feedback on the resulting mesh.