Discussion lists:

Adobe: Color Management Forum

Apple: ColorSync Users List

Links for Contributors:

Chromix Color Think: ICC profile 2D and 3D graphing, management and repair.

The Digital Dog Great free advice in the form of articles.

Hutcheson Consulting Don Hutcheson's free stuff. RGBXPLORER8 can be found in Test targets & images, scroll down to the bottom.

Left Dakota Art Link-o-lator, makes DeviceLink profiles.

Tailored Lighting Makes a 4700 K 12v specially filtered tungsten bulb called SoLux (tm) that comes the closest to simulating a D50 spectral power distribution of any artificial light source we've seen.