Connect2it, LLC
Spring probes, pogo probes BGA, PGA, LGA probes and fine interconnects, conductive elastomers, micro test clips, switch probes, automotive probes, automation test systems and pin loaders. (Pop-ups and consoles too)
http://www.connect2it.com/

Pomona Electronics
Whether you test in a lab, the plant, or the field, your success depends as much on your choice of test accessories as it does on the accuracy of your instruments. That's why professionals over the world put their trust in Pomona. From test leads and probes, to kits, adapters, and IC test clips, Pomona products offer you the performance and dependability your job demands.
http://www.pomonaelectronics.com

Probe Master
Probe Master manufacturers electronic test equipment accessories, such as, oscilloscope probes, oscilloscope kits, BNC cables and many other electronic test equipment accessories all proudly made in the USA. Manufacturer of oscilloscope probes, test leads, multimeter test leads, differential probes, test probes, meter leads and other electronic test equipment accessories. Online catalog and orders from large to small Probe Master does it all.
http://www.probemaster.com/

Electronia AB
Supplies bare board test equipment, test fixtures for loaded boards, functional fixtures and test probes.
http://www.electronia.se/

ALPTEX, Inc
ALPTEX, Inc. is a company involved in the design, development and manufacture of emulators, adaptors and interconnect systems for the emulation, test and programming segment of the electronics industry.
http://www.alptex.com

Ingun
Ingun Prüfmittelbau in Konstanz am Bodensee. Ingun Test Equipment on Lake Constance in Germany.
http://www.ingun.com/

Centurion NDT, Inc.
Designs, manufactures, markets and services eddy current and ultrasonic test instruments as well as probes, transducers and test blocks.
http://www.centurionndt.com/

AlphaTest Corporation
Manufacturer of fine-pitch, ultra-fine pitch, compliant, spring-loaded, test-probes, pins, fixtures for SoC SiP BGA CSP QFN half mm PCMCIA FLEX-CIRCUIT MCM, HYBRID CIRCUIT & SUBSTRATE test fixtures and sockets and RFID testing, Kelvin contacts.
http://www.alphatest.com/

Electrical Test Equipment Catalog
Kilowatt Classroom Electrical Test Equipment Catalog featuring oscilloscopes and multimeters by TPI - Test Products International.
http://kilowattclassroom.com/EquipHome.htm

TestPath, Inc.
Electrical test accessories such as test leads, oscilloscope probes, digital multi-meters, banana plugs, Fuses and alligator clips.
http://www.testpath.com