Venus Industries
- Manufacturer of brass builder hardware. Site features online catalog with picture descriptions of parts.
- http://www.venus-ind.com/

Braun Manufacturing Co. Inc.
- Fabricator of hinges in steel, stainless, brass, and aluminum. Includes specifications and dimension tables.
- http://www.hinge1.com/

Cooke Brothers
- British manufacturers of architectural hinges including slimline, traditional, lift-off and custom designs. Facility to buy online is available.
- http://www.cookebrothers.co.uk

Brookfield Industries, Inc.
- Manufacturers of high capacity hinges and door operators.
- http://www.brookfieldindustries.com/

Velko Hinge, Inc.
- Manufacturer of continuous and specialty hinges.
- http://www.velko.com/

Northeast Hinge Distributors
- Wholesale hinge distributors with online ordering facility.
- http://nehinge.com

H.A. Guden Co., Inc.
- Manufacturer and supplier of continuous, slip or butt type hinges, handles and pulls.
- http://www.guden.com/

PBB, Inc. 
- An architectural hinge manufacturer with experience in the commercial hardware market place.
- http://www.pbbinc.com/

Pemko
- Door seals, thresholds, continuous geared hinges.
- http://www.pemko.com/

Sierra Pacific
- Manufactures hinges and industrial hardware and supplies. Catalog available.
- http://www.spep.com/

Royde and Tucker
- Providing letterplates, pivots, rising and falling butts and other architectural hardware.
- http://www.ratman.co.uk/

Truth Hardware
- Products range from simple or complex hinges, operators and multi-point patio door locking handles.
- http://www.truth.com/

Universal Industrial Products
- Manufacturers specialty hinges, including the SOSS invisible hinge.
- http://www.soss.com/

Markar Products, Inc.
- Door hinges.
- http://www.markar.com/

McKinney Products
- Hinges and other door hanging hardware.
- http://www.mckinneyhinge.com/

Glory Hardware Industry Co Ltd
- Manufacture and exportation of hinges, door lever handles, door bolts, door holders and other builder's hardware.
- http://www.gloryhardware.com/

Hager Hinge
- Manufacturer of door hardware including hinges for architectural, residential, and consumer markets.
- http://www.hagerhinge.com/