T-Splines can be used to create generative freeform objects with Grasshopper, a free plugin for Rhino.Here are some ways the two products can be used together. Please feel free to share your own work on the T-Splines forum.
Integrated plugin1. The T-Splines 2.3 Grasshopper component can be used to convert meshes generated inside Grasshopper to T-Splines or NURBS.
Model courtesy Rodrigo Medina
Control polygon of lines conversion4. Grasshopper can be used to create a control polygon of lines, which can be converted to a T-spline object.