Kokomo Opalescent Glass
Kokomo Opalescent Glass is the oldest manufacturer of opalescent and cathedral stained glass in the world, with the ability to manufacture over 22,000 different color/density/texture combinations. In continuous operation since 1888.
http://www.kog.com/

Uroboros Glass
Manufactures Art glass, Fusible glass, casting glass and other specialty glasses for Art and Architecture
http://www.uroboros.com/

Bullseye Glass
Bullseye Glass Company is a leader in promoting glass art worldwide through quality production of colored glass for art and architecture, research and education, and the presentation of innovative glass art in its Portland gallery.
http://www.bullseye-glass.com/

Okandan Glass
Okandan Cam San. Ve Tic. A.S.
http://www.okandanglass.com/

Custom Glass Corporation
Custom Glass Corporation offers Custom Fabricated Glass, Specialty Glass, Bent Glass, Bulletproof Glass, Silk Screened Glass, Security Glass, Transportation Glass, Bullet Resistant Glass, Safety Glass, and much more
http://www.customglass.com

NGF Canada Ltd
Manufacturer of specialised glass fibre, rubberized glass cord and glass flake. Owned by NGF (Europe), part of NSG (Japan). E-glass, K-glass and U-glass
http://www.ngfcanada.com

Verrerie de Saint-Just
French manufacturers of antique, hand-blown stained glass for architecture, fusing, restoration, leaded windows and projects. Glass includes flashed and multi-colored (bariolé).
http://www.saint-gobain-glass.com/saint-just/indexEN.htm

Spectrum Glass
Manufacturer of products for architecture, kilnforming, and other glassworking arts. Glass includes reamy, baroque, waterglass, and other textures. Offers online factory tour, free patterns and dealer locator.
http://www.spectrumglass.com/

Nippon Electric Glass Co., Ltd
Japan. Multi-national manufacturing company, active in high-tech glass products for optical and electronic devices, reinforcement, architecture and medical equipment. E-glass chopped strands, rovings and yarns for composite reinforcement applications. Also, nonwoven chopped strand mats. Technical information and specifications. English and Japanese.
http://www.neg.co.jp/

Nippon Glass Fiber
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http://www.nsg.co.jp/