High Voltage Connection
Sales representative for high voltage power supplies and other high voltage products. Includes technical articles on high voltage.
http://www.highvoltageconnection.com

TREK, Inc.
Provider of high-voltage devices and instrumentation, including electrostatic voltmeters, high-voltage power amplifiers, surface resistance meters, and charged-plate monitors.
http://www.trekinc.com/

High Voltage Link List
A list of links for electrostatic machines, history of physics and electricity, high voltage devices, and electronics.
http://www.coe.ufrj.br/~acmq/links.html

What is High Voltage
eeProductCenter delivers a full spectrum of critical design information about the latest ICs and electronic components for engineers facing challenging, design-in decisions. eeProductCenter continuously reports new product news with analysis and insight to help you make more informed product/technology decisions.
http://www.chipcenter.com/circuitcellar/november99/c119r16.htm

High Voltage Concepts
Designs and manufactures high voltage power supplies and high voltage diagnostic equipment, including general purpose supplies, x-ray power supplies and high voltage dividers.
http://www.hvconcepts.com/

Voltnet
High voltage devices of all types, including tesla coils, Jacob's ladders, antique devices and lots of pictures.
http://www.voltnet.com/

High Voltage Information
High voltage reference information, including articles, books and relevant links. Also included is a buying guide for high voltage parts, instruments and services.
http://www.highvoltageinfo.com/

Chaos Labs High Voltage Projects
High voltage projects including ignition coil driver, high voltage transformers, and a 60 kV pulse generator.
http://members.tripod.com/hvprojects/highvoltage/

Lightning On Demand
Builders of the world's largest Tesla Coils, as well as various other High Voltage and High Energy devices.
http://www.lod.org/index.html

Silidriel
dielectric and metalic lifting devices for altitude repair and mantenance up to 12 meters.
http://www.silidriel.com/