OpenTK TL;DR License Summary Use OpenTK under the MIT/X11 license[1]. Essentially, do whatever you want as long as the OpenTK project still has copyright. If you use AdvancedDLSupport outside of direct use via OpenTK[2], follow its license[3] (LGPLv3). Citations [1] OpenTK's MIT license. [2] OpenTK's AdvancedDLSupport custom license grant. [3] The LGPLv3 license, as seen in the AdvancedDLSupport repository.