Vardhman Threads
In India, Vardhman is synonymous with threads. Not just threads for clothes, but for furnishings, wallets, hand bags, suitcases, shoes, car upholstery, tents, industrial applications and even kite-flying.
http://vardhmanthreads.com

Introduction to Programming Threads
Introduces what threads are, why they are useful and how to program with them using the POSIX 1003.1c thread standard and API bindings for C.
http://www.mit.edu/people/proven/IAP_2000/index.html

Survey of Threads
Comparing Solaris, Linux, and Windows NT threads.
http://www.northco.net/chenke/project/project2.html

Lab Threads & Gear Works, Inc
Catalog and Custom Gears Since 1907. Lab threads manufactures high quality gears, shafts and assemblies with QS 9000 Certification. They provide a vertically integrated supply source including engineering, machining, heat treating, assembly and quality assurance. Based in Hudson, Wisconsin, UGA is part of a family of companies under parent company, United Stars Inc.
http://www.labthreads.com/

Cucirini M & M sas
ALTA TORSIONE, MACCHINE DA RICAMO, SEWING THREAD, METALLIC THREAD, HIGH TORSION, EMBROIDERY MACHINES, KING SPOOL, TORSIONE CONTRARIA, LOW TORSION
http://www.cucirinimem.it/

GNU Pth
Portable Threads: portable POSIX/ANSI-C library for Unix gives non-preemptive priority-based scheduling for multithreading in programs. All threads run in same address space, each has its own program counter, run time stack, signal mask, errno variable; cooperative scheduling: threads dispatched based on priority, pending events. [Open Source, GPL]
http://www.gnu.org/software/pth/

Xuanli Thread Co., Ltd
China. Viscose embroidery threads. Also, high-tenacity twisted filament threads for fashion and home furnishing applications, from polyester.
http://www.threadchina.com/html/e05.htm

Holrose Sewing Threads, Ltd
Holrose Sewing Threads - Buy sewing threads online : - POLY COTTON GLACE SPUN POLYESTER POLY COTTON 8'S BONDED NYLON POLY CORESPUN POLYESTER COTTON NYLON MONOFILAMENT CF POLYESTER PIPING CORDS nylon threads, bonded nylon, sewing thread, sewing thread supplier, low price sewing threads, industrial sewing threads, Bonded nylon, Spun polyester, Polycorespun, Polycotton, Polyester, Polycotton Glaze, Nylon Monofilament, Piping Cord, Sewing Threads Online, holrose, www.holrose.co.uk
http://www.holrose.co.uk/

Malcolm Ross & Sons, Ltd
UK. Agents and distributors of spun, filament and monofilament, and fibrilated yarns and threads for industrial applications. Also, polyamide cords and identification threads.
http://www.malcolmross.co.uk/

Bandhu Threads
Manufacturer of embroidery thread and embroidery yarn for hand embroidery, machine embroidery, special purpose embroidery and computerized embroidery in india.
http://www.bandhu.in/