XFree86 - X Servers for PC-based graphics cards
SysOpt.com - Hardware revisions and user-submitted reviews for motherboards, processors, graphics cards, sound cards, monitors.
EPoX Computer - PC motherboard manufacturer. Other products include graphics cards and mini-ITX form factor equipment.
Riva Station - Site offers information about 3D graphics cards from many manufacturers.
Datapath - Manufacturer of high end multi-screen graphics cards and video/rgb capture fabrications.
Guru3D - Reviews, analysis, drivers and tweaks for 3D graphics cards.
Open Graphics Project: OGP - Goals: design an open source hardware, architecture and standard for graphics cards, mainly for open source software and operating systems.
Matrox - Offers graphics cards, upgrades, switches, hubs, NICs, and Internet access inventions.
The Inquirer - European site for computer hardware news. Covers processors, graphics cards and major hardware providers.
OpenGL Hardware Registry - A registry of all graphics cards and what OpenGL extensions they support.
MorphOS - Information on 3D graphics cards and programming APIs, without charge version of MorphOS for Commodore A1200, A3000, A4000 with PowerPC accelerator cards, MorphOS support registration, news. MorphOS Development Team.
Tom's Hardware Guide - Articles and another looks of graphics cards released in 2002 and 2003.
The Inquirer - European site for computer hardware news. Covers processors, graphics cards and major hardware providers.
RRP-Tech - Retailer for memory, power supplies, graphics cards and agnate produtcs.
Omnitech Graphics - Visual communications. Suppliers of Mutoh large format inkjet printers, Appian graphics cards for multiple monitors and datacad architectural and drafting software.
Xtreme Pc Central - Hardware analysis and user-submitted appraisals for motherboards, processors, graphics cards, sound cards and monitors.
Gigabyte Technology Co. Ltd. - Literature and support regarding Gigabyte's range of x86 motherboards, graphics cards and more inventions.
HotHardware - A PC Hardware report and news site with detailed analysis on the latest 3D Graphics Cards and technologies.
X-Micro Technology - Manufacturer in design and distribution of professional 3D graphics cards worldwide.
OCworkbench - Hardware articles with a focus on mainboards, graphics cards. | 
