Developer Express
Developer Express Inc - Feature-Complete Components, Reporting Tools, IDE Add-ins, and Business Application Frameworks for Visual Studio, Delphi and C++Builder
http://www.devexpress.com/

Reo Components
REO is an original manufacturer of high quality power equipment, including electronic controllers, components and electrical regulators.
http://www.reocomponents.com

KineticaRT
KineticaRT is a unique collection of software components and applications for building high speed systems for control, monitoring, test and data acquisition. KineticaRT is used in applications as diverse as greenhouse controllers, financial data displays, retail security, F1 wind tunnels and engine test cells.
http://www.kineticart.co.uk/Default.asp?page=Products/KineticaRT

Key Components International Ltd.
Brokers of electronic and PC chipset components, supplying surface mount components for the PC repair and computer OEM marketplace.
http://www.keycomponents.co.uk

Spatial Components
CAD and GIS SOFTWARE DEVELOPMENT TOOLS, CAD and GIS ACTIVEX, GIS JAVA APPLETS, GIS INTERNET
http://www.abacogroup.com/eng/products/index.htm

Nix Components
Nix Components™ is a one-stop, robust suite of over 77 visual, non-visual and data-aware components for Borland Delphi and C++Builder.
http://www.nixsoftware.com/products/nixcomponents/

Surge Components, Inc.
Distributes passive electronic products and components such as capacitors and discrete components to original equipment manufacturers and to other distributors. (Nasdaq: SPRS).
http://www.surgecomponents.com/

Summa Industries
Manufactures proprietary engineered components, including prismatic lenses, irrigation components, conveyor components for food processors, and other molded and extruded products for electronics and other industrial markets. (Nasdaq: SUMX).
http://www.summaindustries.com/

SamLogic Internet Components
SamLogic Internet Components is a collection of Internet and intranet ActiveX components. It contains controls for sending & receiving e-mail messages, FTP, ping, time servers, WHOIS, credit cards etc.
http://www.samlogic.net/components/components.htm

Julius Blum and Co., Inc.
Complete source for stock components for architectural metal work. Components available in aluminum, bronze, stainless steel and nickel-silver. All components in stock for immediate shipment. Products include CONNECTORAIL, CARLSTADT, JB, Glass Railing, and complete selection of tubing, bars and shapes.
http://www.juliusblum.com/