GLOO is available with source code or just compiled libraries. We sell GLOO both on royalty as well as one time fee. Since each application is different we encourage you to contact us for details. What comes with GLOO: GlOO libraries come with a sample application source code to get you started. You can see how quickly you can be up and running an application with the GLOO libraries. We can customize the libraries if you want additional features. For example if you needed curvature or derivative information for a curve or surface we can add that on.