OpenNurbs and step file export


I would like to know if I can use openNurbs and save my geometry in step file format without using Rhino ?
If no, what exporter library should I use ?

Thank you.

Sorry no. The openNURBS toolkit can only read and write Rhino’s 3DM file format.

For reading and writing STEP files, you might consider this:

Ok. And this part does not make part of the open source Rhino (Rhino Common) ? I have to own one licence of Rhino to export in step file format ?

Correct, there is no free, open source STEP export.