Supervisory Control And Data Acquisition - SCADA
Manufacturers & Services
Supervisory control and data acquisition (SCADA) is used, as the name suggests, to monitor and control processes. My personal exposure to SCADA was while working for the Potomac Edison power company in Hagerstown, Maryland, as an engineer. for a short time right after graduation from college. At the time, all of the substations and big switching stations either had, or were being outfitted with SCADA capabilities. Functions ranged from simple monitoring the positions of circuit breakers and power (voltage & current), to changing transformer tap ratios and operating switches.  Remote communications were handled via telephone model or power line carrier. Some work was being done with wireless. Of course SCADA implementations have much wider and varied uses than power distribution. Vast manufacturing installation and industrial process are handled through SCADA.
For your convenience, I have built a set of pages with hand-selected companies. My policy is to only list companies that actually manufacture product or offer services related to the page title subject. Product distributors and sales representatives are not listed (they have their own page). This helps guarantee that each listing offers a unique product or service.
Advanced Control Systems, Inc
800-831-7223 / Norcross, GA
Provider of the PRISM SCADA Suite.
acsatlanta.com/pages/scada_list.html

Aqua-Aerobic Systems, Inc
815-654-2501 / Rockford, IL
Offers design and development of Electrical Control Panels and Supervisory Control And Data Acquisition (SCADA) systems, targeted for wastewater treatment equipment and processes.
aqua-aerobic.com/SCADA.asp

Arc Electronics
800-926-0226 / Georgetown, TX
SCADA data communication converters and hubs.
arcelect.com

Campbell Scientific, Inc
435-753-2342 / Logan, UT
Products for SCADA automated monitoring & control.
campbellsci.com/scada

Data Flow Systems, Inc
321-259-5009 / Melbourne, FL
Provides radio and network-based telemetry/SCADA systems for water-related utilities.
dataflowsys.com

GE Energy
Network management solutions including SCADA / EMS / DMS software.
gepower.com

Industrial Control Links, Inc
800-888-1893
Designs and manufactures hardware and software solutions to collect, record and transport information for SCADA systems, process control and industrial automation applications.
iclinks.com

Invensys Wonderware
949-727-3200 / Lake Forest, CA
Geographically distributed SCADA (Geo-SCADA) software solutions.
global.wonderware.com

MODCOMP, Inc
800-322-3287 / Deerfield Beach, FL
Linux hosted SCADA solutions.
modcomp.com/scada

NBT
800-892-5303 / Maple Grove, MN
Telemetry system hardware, SCADA & data acquisition systems.
nbtinc.com

Northern Data Systems, Inc
856-235-7272
Wireless radio telemetry SCADA systems and other equipment.
nordatasys.com

OPC Systems.NET
877-679-0898 / Evergreen, CO
Provides HMI and SCADA software products for automated systems to customers worldwide.
opcsystems.com

Sage Designs, Inc
888-ASK-SAGE / Mill Valley, CA
Specializes in supplying open-architecture telemetry & SCADA hardware and software for both the industrial and municipal markets.
sagedesignsinc.com

SCADA Logic
425-890-5931 / Kirkland, WA
Specializes in PLC programming, RTU programming, HMI programming and providing SCADA system support.
scadalogic.com

SCADA Source
866 327-1579 / Aztec, NM
Providing the Oil & Gas industry with solutions to all of their automation needs.
scadasource.com

Second Wind, Inc
617-776-8520 / Somerville, MA
Manufacturer of windfarm monitoring systems, specializing in measuring all parameters of commercial windfarm operations including windfarm SCADA and wind resource assessment.
secondwind.com/products/windfarmscada.shtml

Software Horizons, Inc
978-670-8700 / Billerica, MA
Developer of low cost Industrial Human Machine Interface / Operator Interface / SCADA software and total solutions based on Windows PC, Pocket PC, Palm OS and Windows CE Platforms.
shorizons.com

Sunwave
031-421-0457 / Korea
BTS monitoring systems, pilot beacons, repeaters, antennas & RF components, telemetry products, RF transmitters & receivers.
sunwave.co.kr

Tascomp Limited
+44 1642 370666 / UK
Provider of Prodigy HMI SCADA software.
tascomp.com

Techno-Sciences, Inc
240-790-0600 / Beltsville, MD
TSi's SCADA systems collect, analyze, and archive real-time data from factory equipment providing secure, web-based, real-time access to Key Performance Indicators (KPIs) such as machine utilization, production efficiencies and yields, inventory levels, order status, quality and traceability data, and Overall Equipment Effectiveness (OEE).
technosci.com/syseng/scada.php

Tekron International Ltd
+64 4 566 7722 / Wellington, New Zealand
Network time synchronization solutions. Precision timing instruments. Designers and manufacturers of GPS clocks, multi-output signal repeaters, and time synchronization devices for the power industry.
tekroninternational.com

Wastech Controls & Engineering, Inc
818-998-3500 / Chatsworth, CA
Human Machine Interface (HMI) & Supervisory Control & Data Acquisition (SCADA) Software Systems.
wastechengineering.com/services/hmi.html