A Polyester Saga, Geography And All, by John E. Luke, Technical Editor of Textile World
An interesting article that puts the competition into perspective.

Trade names for the Generic Manufactured Fibers
Contains some of the most widely known generic manufactured fibers and their trade names.

Global Production of Manufactured Fibers
Includes market share numbers by region, and by fiber type. The figures are courtesy of Fibersource.

Microfiber
One of the most important developments in recent years has been the technology to extrude extremely fine filaments (less than 1.0 denier) while maintaining all of the strength, uniformity and processing characteristics expected by textile manufacturers and consumers.

Polyester Manufacturer Directory
Basic information and contact info (including links) for a number of polyester manufacturers. From Apparel Search.