Company lists · Data refreshed September 2026

Top 25 Automation systems integration companies based in the United States

Name: Automation systems integration companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 3,759 companies tracked

RevenueBase identified 3,759 automation systems integration companies headquartered in the United States as of September 2026 and tracks 146,344 professional contacts across them, including 62,291 with verified work emails. Houston is the largest hub.

This list covers automation systems integration companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

3,759Companies

146,344Contacts tracked

62,291Verified emails

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The 25 largest automation systems integration companies based in the United States

Ranked by team size

Top 25 of 3,759 automation systems integration companies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to automation systems integration companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Emerson	Partial evidence	St Louis, MO, United StatesHQ checked Sep 21, 2026	10001+	47,277 contacts →
	Partial evidence “Emerson (NYSE: EMR) is a global automation leader delivering solutions for the most demanding technology challenges.” Source: RevenueBase Database · checked Sep 21, 2026
2	Rockwell Automation	Partial evidence	Milwaukee, WI, United StatesHQ checked Sep 21, 2026	10001+	20,582 contacts →
	Partial evidence “At Rockwell Automation, we connect the imaginations of people with the potential of technology to expand what is humanly possible, making the world more intelligent, more…” Source: RevenueBase Database · checked Sep 21, 2026
3	Convergint	Partial evidence	Hoffman Estates, IL, United StatesHQ checked Sep 21, 2026	10001+	5,707 contacts →
	Partial evidence “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Source: RevenueBase Database · checked Sep 21, 2026
4	Mitsubishi Electric Automation, INC	Partial evidence	Vernon Hills, IL, United StatesHQ checked Sep 21, 2026	n/a	2,012 contacts →
	Partial evidence “The sole mission of Mitsubishi Electric Automation Americas, is to support the factory automation needs of North and Latin American customers with combined sales, marketing…” Source: RevenueBase Database · checked Sep 21, 2026
5	Omron Automation	Partial evidence	Hoffman Estates, IL, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,847 contacts →
	Partial evidence “Our business is automation, and we envision a future in which people can do more, try more, and be more.” Source: RevenueBase Database · checked Sep 21, 2026
6	JR Automation	Strong evidence	Holland, MI, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,386 contacts →
	Strong evidence “JR Automation is a leading global integrator of custom automated systems for manufacturing and distribution environments around the world.” Source: RevenueBase Database · checked Sep 21, 2026
7	Englobal	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	201-500	1,183 contacts →
	Partial evidence “Who We Are Englobal Founded in 1985, ENGlobal (NASDAQ: ENG) is a specialty engineering services firm that focuses on automation solutions and select EPCM projects for the energy…” Source: RevenueBase Database · checked Sep 21, 2026
8	Rovisys	Strong evidence	Aurora, OH, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,159 contacts →
	Strong evidence “As one of the world's largest independent systems integrators, RoviSys delivers comprehensive automation, digital transformation, manufacturing execution (MES), Industrial AI…” Source: RevenueBase Database · checked Sep 21, 2026
9	Convergix Automation Solutions	Partial evidence	Auburn Hills, MI, United StatesHQ checked Sep 21, 2026	501-1,000	942 contacts →
	Partial evidence “Convergix Automation Solutions designs, engineers and integrates hardware and software to automate its customers' operations.” Source: RevenueBase Database · checked Sep 21, 2026
10	Interstates	Partial evidence	Sioux Center, IA, United StatesHQ checked Sep 21, 2026	1,001-5,000	938 contacts →
	Partial evidence “As a Partner Interstates is your trusted partner for electrical, automation, and operational technology needs.” Source: RevenueBase Database · checked Sep 21, 2026
11	Prime Controls	Partial evidence	Lewisville, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	857 contacts →
	Partial evidence “Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.” Source: RevenueBase Database · checked Sep 21, 2026
12	Awc, INC	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 21, 2026	501-1,000	848 contacts →
	Partial evidence “We love our customers and are committed to providing Better Automation and Controls Solutions, Products, Engineering, Services and Support to them.” Source: RevenueBase Database · checked Sep 21, 2026
13	Bell And Howell	Partial evidence	Durham, NC, United StatesHQ checked Sep 21, 2026	1,001-5,000	760 contacts →
	Partial evidence “Bell and Howell is a technology-driven leader in Automation Services and Automation Solutions helping businesses maximize operational efficiency and deliver exceptional customer…” Source: RevenueBase Database · checked Sep 21, 2026
14	E Tech Group	Strong evidence	West Chester, OH, United StatesHQ checked Sep 21, 2026	501-1,000	610 contacts →
	Strong evidence “E Tech Group is one of the largest engineering and system integration firms in the United States.” Source: RevenueBase Database · checked Sep 21, 2026
15	Rovisys Building Technologies	Strong evidence	Aurora, OH, United StatesHQ checked Sep 21, 2026	1,001-5,000	547 contacts →
	Strong evidence “As part of the RoviSys family of companies, we deliver vendor independent building automation, electrical power management, facility monitoring, and systems integration solutions…” Source: RevenueBase Database · checked Sep 21, 2026
16	Contech Control Services	Partial evidence	La Porte, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	512 contacts →
	Partial evidence “When we formed Contech in 1980, our goal was to create a specialized engineering and construction company to provide a full range of system independent services for process…” Source: RevenueBase Database · checked Sep 21, 2026
17	Ardent Services, LLC	Partial evidence	Covington, LA, United StatesHQ checked Sep 21, 2026	51-200	467 contacts →
	Partial evidence “Ardent Services, LLC (Ardent) is a leading provider of high-quality power, control, process-automation, and electrical and instrumentation (E&I) services for process industries…” Source: RevenueBase Database · checked Sep 21, 2026
18	Thermo Systems	Strong evidence	East Windsor, NJ, United StatesHQ checked Sep 21, 2026	201-500	455 contacts →
	Strong evidence “Thermo Systems is a full-service control systems integration partner, providing world-class automation solutions within the Energy, Life Sciences, and Mission Critical markets.” Source: RevenueBase Database · checked Sep 21, 2026
19	Fori Automation, LLC A Lincoln Electric Company	Strong evidence	Shelby Twp., MI, United StatesHQ checked Sep 21, 2026	501-1,000	447 contacts →
	Strong evidence “Fori Automation, LLC is a global leader in the design, build, and integration of custom material handling, assembly, testing, and welding systems.” Source: RevenueBase Database · checked Sep 21, 2026
20	Electroimpact	Partial evidence	Mukilteo, WA, United StatesHQ checked Sep 21, 2026	201-500	443 contacts →
	Partial evidence “Electroimpact is a highly experienced provider of factory automation and tooling solutions.” Source: RevenueBase Database · checked Sep 21, 2026
21	Tech Electronics	Indirect evidence	St. Louis, MO, United StatesHQ checked Sep 21, 2026	201-500	406 contacts →
	Indirect evidence “Since we opened our doors in 1963, relationships have been are our strength by putting people before products.” Source: RevenueBase Database · checked Sep 21, 2026
22	Mangan INC	Partial evidence	Long Beach, CA, United StatesHQ checked Sep 21, 2026	201-500	395 contacts →
	Partial evidence “Mangan Inc, an Automation & Engineering Firm, provides the highest quality services for the Refining, Gas & Oil, Pipeline, Renewable, Chemical, and Biopharm Industries.” Source: RevenueBase Database · checked Sep 21, 2026
23	Kalypso A Rockwell Automation Business	Partial evidence	Milwaukee, WI, United StatesHQ checked Sep 21, 2026	1,001-5,000	393 contacts →
	Partial evidence “As Rockwell Automation’s digital service arm, we bring digital solutions to product problems.” Source: RevenueBase Database · checked Sep 21, 2026
24	R&e Automated	Strong evidence	Bruce Township, MI, United StatesHQ checked Sep 21, 2026	501-1,000	383 contacts →
	Strong evidence “R&E Automated Systems is an internationally recognized leader in automation, engineering and field service management.” Source: RevenueBase Database · checked Sep 21, 2026
25	Matrix Technologies, INC	Indirect evidence	Maumee, OH, United StatesHQ checked Sep 21, 2026	201-500	382 contacts →
	Indirect evidence “Matrix Technologies Inc.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: automation systems integration companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names automation systems integration companies.
Partial evidence: Its own public description names part of automation systems integration companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name automation systems integration companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 3,759 automation systems integration companies based in the United States

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Automation systems integration companies based in the United States at a glance

As of Sep 21, 2026

42.6%Verified-email coverage

38.9Average contacts per company

11-50Median size (employees)

1.9%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

1,680

11-50

1,458

51-200

467

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 3,759 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among automation systems integration companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “automation systems integration companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names automation systems integration companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among automation systems integration companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 62,291 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Automation systems integration companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names automation systems integration companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many automation systems integration companies are there based in the United States?

RevenueBase identified 3,759 automation systems integration companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Emerson, headquartered in St Louis, tops this list with the largest team on record.

Which city has the most automation systems integration companies?

Houston leads with 73 headquartered companies, followed by New York (33) and Los Angeles (31).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 62,291 verified decision-maker contacts tracked across these 3,759 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.