Extalite- Italian hub makes that make the lightest rear hub in the world.
Tune- German hub makers that make so of the lightest and strongest hubs available.
Protech Composites- American rim makers that make carbon clinchers that are light and very srong but inexpensive
Kinlin-Company out of Taiwan that makes arguably the best alloy rims available.
Soul Kozak- Another great hub maker out of Poland
Corima- Europe's Zipp
White Industries- American company that makes light weight, very stong, and Inexpensive hubs
Alchemy- American master wheel builder who is in the process of finishing what most all wheel builders consider to be the best hubs ever produced. If you write about any company make it Alchemy Bicycle works. These guys are the real deal.