Major US supplier of glass blowing tools and colors. The website is well laid out and has a great color comparison tool.
They carry Reichenbach and Zimmerman color (Gaffer dropped them); Jim Moore, Spiral Arts, Steinert, Correll and Blockhead tools.
Gott makes and sells secialized tools and protective clothing for glass blowers. I don't know many folks using this stuff but it sounds mighty cool.
The tools are all designed to reduce the amount of smoke in the air of the shop and marks/scars on the finished piece.
The website is a mess, but their 'color kits' are great, especially if you're just starting out and want to play around with color without spending a fortune.
They carry Kugler, Q-Color and Wiesenthal color; Essemce and Palmer pipes and tools.