Libraries

AirZip Accelerator
Real time image compression library which handles a wide range of standard formats.
http://www.airzip.com/Accelerator.htm

Bar Code DLLs
Create high quality, device independent, Windows MetaFile graphics. Includes programming examples and free bar code tutorial.
http://www.taltech.com/TALtech_web/products/dll_barcodes.html

Dislin
Library of subroutines and functions that display data graphically. Software is available for the programming languages C, Fortran 77, Fortran 90, Perl, Python and Java.
http://www.mps.mpg.de/dislin/

Fastgraph
Collection of graphics functions that can help you develop professional games and applications.
http://www.fastgraph.com/

Free Graphics Libraries, 3D/2D Engines, Animation
Includes list of graphics libraries (to create and manipulate graphics), 3d and 2d engines.
http://www.thefreecountry.com/sourcecode/graphics.shtml

G2 Graphical Library
Portable 2D graphics library. Provides a set of functions for simultaneous generation of graphical output on different types of devices.
http://g2.sourceforge.net/

GD Library
A graphics library for fast image creation
http://www.libgd.org

Glide Open Source Project
The homepage of the Glide Open Source Project.
http://glide.sourceforge.net/

Graphics Toolkit for AMD Élan SC400 Embedded Microcontroller
AMD ElanSC400 native graphics mode can now easily be implemented in C++ and C programs using this library. Source code included.
http://www.hemodynamic.com/elan/

GrWin Graphics Library
An easy to use free graphics library for Fortran and C(C++) available on Win32 platforms using MinGw, cygwin, VC++/VF or BCC. Interactive graphics programming can be made with it.
http://spdg1.sci.shizuoka.ac.jp/grwinlib/english/

Image Enable
Design imaging applications and image-enable document management systems quickly and effectively with an Eroiica API.
http://www.parallax69software.com/aplik_us.htm

libAfterImage Imaging Library
Image import, storage, manipulation and output library for X.
http://www.afterstep.org/afterimage/

Libart
A library for high-performance 2D vector and bitmap graphics
http://www.levien.com/libart/

little cms (lcms)
A free, open source, CMM engine. It provides fast transforms between ICC profiles.
http://www.littlecms.com/

OpenGUI
High-level, cross-platform C/C++ graphics and windowing library built on a fast x86 assembler graphics kernel. [Open Source, LGPL]
http://www.tutok.sk/fastgl/

SFont
A font library for use with SDL which uses variable width bitmap fonts.
http://user.cs.tu-berlin.de/~karlb//sfont/

SineMaker
A toolkit for the development of games, demos or other graphic related programs with Visual Basic.
http://hem.spray.se/sinemaker/

Solace
A free graphics library still in development.
http://www.cs.nmsu.edu/~joshagam/Solace/

Windows Programming
Comparison of Nugraf Developer's 3D Toolkit and Open GL. Publisthed in ACM Crossroads Magazine.
http://www.acm.org/crossroads/xrds6-4/graphicslib.html

wxNURBS
An application to design NURBS curves and surfaces. It can also be used as an NURBS library, providing an API that could be used by other applications.
http://wxnurbs.sourceforge.net/