OpenGL is not a standalone software that can be "downloaded" as a repack or separate installer. It is a graphics API that is included within your graphics card drivers. To get OpenGL 3.3 on Windows 7 64-bit, you must install the official driver provided by your GPU manufacturer (NVIDIA, AMD, or Intel). How to Get OpenGL 3.3 on Windows 7 Identify Your Graphics Card: Press Win + R, type dxdiag, and press Enter.

Visit the manufacturer's official support site to get the latest 64-bit Windows 7 drivers. This is the only legitimate way to "install" OpenGL 3.3.

2. What are people calling an “OpenGL 3.3 repack”?

These repacks usually contain one or more of the following:

To get OpenGL 3.3 on Windows 7 (64-bit), you do not download OpenGL as a standalone program. Instead, it is a feature included within your graphics card (GPU) drivers.