Here you'll find some very useful libraries to help speed along your development.
Equalizer is an open source programming interface and resource management system for scalable OpenGL applications. An Equalizer application can be deployed on any visualization system, from a singlepipe workstation to large scale graphics clusters.
GLee is a free cross-platform extension loading library that takes the burden off your application. GLee makes it easy to check for OpenGL extension and core version availability, automatically setting up the entry points with no effort on your part.
GLEW is an open-source cross-platform extension loading library with thread-safe support for multiple rendering contexts and automatic code generation capability. GLEW provides easy-to-use and efficient methods for checking OpenGL extensions and core functionality.
GLUS is an open-source C library, which provides a hardware and operating system abstraction plus many functions usually needed for graphics programming using OpenGL, OpenGL ES or OpenVG.
OpenGL Mathematics (GLM) is a C++ mathematics library for 3D software based on the OpenGL Shading Language (GLSL) specification.
OpenSceneGraph is a high-level 3D graphics toolkit exposing OpenGL's capabilities while providing many capabilities of its own. OpenSceneGraph boasts a large user community and has been employed for visual simulation, games, virtual reality, scientific visualization, and modeling.