GLU, or OpenGL Utility Library provides some higher-level functionality not provided by just OpenGL itself. Some of GLU's Features include: Scaling of 2D images and creation of mipmap pyramids, Transformation of object coordinates into device coordinates and vice versa, Support for NURBS surfaces, Support for tessellation of concave or bow tie polygonal primitives, Specialty transformation matrices for creating perspective and orthographic projections, positioning a camera, and selection/picking, Rendering of disk, cylinder, and sphere primitives, Interpreting OpenGL error values as ASCII text.

SOIL is a tiny C library used primarily for uploading textures into OpenGL.

GL2PS is a C library providing high quality vector output for any OpenGL application. GL2PS uses sorting algorithms capable of handling intersecting and stretched polygons, as well as non-manifold objects. GL2PS provides many features including advanced smooth shading and text rendering, culling of invisible primitives and mixed vector/bitmap output.

glmark2 is an OpenGL 2.0 and OpenGL ES 2.0 benchmark based on the original glmark benchmark by Ben Smith.

Guile-OpenGL is a library for Guile that provides bindings to the OpenGL graphics API.

VirtualGL redirects the 3D rendering commands from OpenGL applications to 3D accelerator hardware in a dedicated server and displays the rendered output interactively to a thin client located elsewhere on the network.

Piglit is a collection of automated tests for OpenGL and OpenCL implementations.

S2TC is a patent-free implementation of S3 Texture Compression (S3TC, also known as DXTn or DXTC) for Mesa.

Mesa is a free implementation of the OpenGL and Vulkan specifications - systems for rendering interactive 3D graphics. A variety of device drivers allows Mesa to be used in many different environments ranging from software emulation to complete hardware acceleration for modern GPUs.

This is the last version of the mojoshader library with the glProgramViewportFlip before it was replaced with glProgramViewportInfo.

Glad uses the official Khronos XML specifications to generate a GL/GLES/EGL/GLX/WGL loader tailored for specific requirements.

NanoVG is small antialiased vector graphics rendering library for OpenGL. It has lean API modeled after HTML5 canvas API. It is aimed to be a practical and fun toolset for building scalable user interfaces and visualizations.

Freeglut is a completely Free/OpenSourced alternative to the OpenGL Utility Toolkit (GLUT) library. GLUT was originally written by Mark Kilgard to support the sample programs in the second edition OpenGL RedBook. Since then, GLUT has been used in a wide variety of practical applications because it is simple, widely available and highly portable.

GLUT (and hence freeglut) allows the user to create and manage windows containing OpenGL contexts on a wide range of platforms and also read the mouse, keyboard and joystick functions. Freeglut is released under the X-Consortium license.

MojoShader is a library to work with Direct3D shaders on alternate 3D APIs and non-Windows platforms. The primary motivation is moving shaders to OpenGL languages on the fly. The developer deals with "profiles" that represent various target languages, such as GLSL or ARB_*_program.

This allows a developer to manage one set of shaders, presumably written in Direct3D HLSL, and use them across multiple rendering backends. This also means that the developer only has to worry about one (offline) compiler to manage program complexity, while MojoShader itself deals with the reduced complexity of the bytecode at runtime.

MojoShader provides both a simple API to convert bytecode to various profiles, and (optionally) basic glue to rendering APIs to abstract the management of the shaders at runtime.

GObject introspection is a middleware layer between C libraries (using GObject) and language bindings. The C library can be scanned at compile time and generate metadata files, in addition to the actual native C library. Then language bindings can read this metadata and automatically provide bindings to call into the C library.

Glib::Object::Introspection uses the gobject-introspection and libffi projects to dynamically create Perl bindings for a wide variety of libraries. Examples include gtk+, webkit, libsoup and many more.

xdg-dbus-proxy is a filtering proxy for D-Bus connections. It can be used to create D-Bus sockets inside a Linux container that forwards requests to the host system, optionally with filters applied.

GLib provides the core application building blocks for libraries and applications written in C. It provides the core object system used in GNOME, the main loop implementation, and a large set of utility functions for strings and common data structures.

Glibmm provides a C++ programming interface to the part of GLib that are useful for C++.

Intltool is a set of tools to centralise translations of many different file formats using GNU gettext-compatible PO files.

The intltool collection can be used to do these things:

Extract translatable strings from various source files (.xml.in, glade, .desktop.in, .server.in, .oaf.in).

Collect the extracted strings together with messages from traditional source files (.c, .h) in po/$(PACKAGE).pot.

Merge back the translations from .po files into .xml, .desktop and oaf files. This merge step will happen at build resp. installation time.

This module provides perl access to GLib and GLib's GObject libraries. GLib is a portability and utility library; GObject provides a generic type system with inheritance and a powerful signal system. Together these libraries are used as the foundation for many of the libraries that make up the Gnome environment, and are used in many unrelated projects.

Libsigc++ implements a type-safe callback system for standard C++. It allows you to define signals and to connect those signals to any callback function, either global or a member function, regardless of whether it is static or virtual. It also contains adaptor classes for connection of dissimilar callbacks and has an ease of use unmatched by other C++ callback libraries.

cppgir processes .gir files derived from GObject introspection annotations into a set of C++ files defining suitable namespaces, classes and other types that together form a C++ binding.

Net::DBus provides a Perl XS API to the DBus inter-application messaging system. The Perl API covers the core base level of the DBus APIs, not concerning itself yet with the GLib or QT wrappers.