General questions

I have just a few, random questions about OpenGL libraries.

-Seeing as GLUT has been out of development for several years now, is there a better (read: recent) alternative? Are there only certain versions it supports?
-If I wanted to use SDL for things like window creation and input/output, I need gl.h and glu.h. Can I get these from any library out there?

You should check freeglut.