Adobe. Software and fonts.

Emigre. You know who they are.

From FontShop, the second electronic edition of the FontFont typeface specimen, the FontFontFinder

International Typeface Corporation (ITC) A (typeface) intellectual property licensor.

Linotype. A new site from one of the oldest, and most respected, font foundries. Before the advent of desktop publishing, we were a Linotype shop. Most of the fonts in Adobe's font library come from here.

Microsoft's typography pages. Useful information on embedded fonts, truetype, cascading stylesheets, etc. and a large collection of links. They will also answer intelligent questions.

Monotype/Agfa. Useful information.