Glui - glui - GLUI is a GLUT-based C++ user interface library which provides controls such as buttons, checkboxes, radio buttons, and spinners to OpenGL applications. It is window-system independent, using GLUT or FreeGLUT.

Really Good Emails - A large collection of good product email design.

Annotate - Annotate (formerly know as Glui) is the simplest way to capture, annotate and share screenshots.

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