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The Open Toolkit Library 1.1 beta3

OpenTK 1.1 beta3 is ready for download:

This release is backwards compatible with the 1.1 API and offers significant improvements:

  • Increased stability on Window, Linux and the SDL2 backend
  • A new, faster interop mechanism for OpenGL functions.
  • 300%-1000% (!) faster startup times, depending on your configuration
  • 75% lower memory consumption (670KB bytes in 10K objects instead of 2800KB in 75K objects)
  • 35% smaller dll size (3.7MB instead of 5.7MB)
  • Official support for the mono-linker (included under Dependencies/managed/monolinker.exe)

All users are strongly encouraged to upgrade.

If you encounter a bug, please report it at