Company lists · Data refreshed September 2026

Top 25 Operational technology consulting firms based in the United States

Name: Operational technology consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 7,859 companies tracked

RevenueBase identified 7,859 company matches for operational technology consulting firms associated with the United States as of September 2026 and tracks 133,678 professional contacts across them, including 47,222 with verified work emails. New York is the largest hub.

This list covers company matches for operational technology consulting firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 29, 2026 How this list was built

7,859Companies

133,678Contacts tracked

47,222Verified emails

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The 25 largest operational technology consulting firms based in the United States

Ranked by team size

Top 25 of 7,859 company matches for operational technology consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Protiviti	Exact match	Menlo Park, CA, United StatesHQ recorded Sep 29, 2026	5,001-10,000	8,779 contacts →
	Exact match “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2	Genpact Headstrong Capital Markets	Exact match	Reston, VA, United StatesHQ recorded Sep 29, 2026	10001+	3,109 contacts →
	Exact match “Genpact Headstrong Capital Markets is a global consulting and IT services company with a specialized focus in capital markets.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3	AHEAD	Exact match	Chicago, IL, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,989 contacts →
	Exact match “AHEAD accelerates strategy into execution by engineering integrated solutions across infrastructure, applications, data, and security.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4	Entrust Solutions Group	Exact match	Lisle, IL, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,966 contacts →
	Exact match “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	Hexagon Asset Lifecycle Intelligence	Exact match	Madison, AL, United StatesHQ recorded Sep 29, 2026	10001+	2,630 contacts →
	Exact match “Hexagon’s Asset Lifecycle Intelligence division helps clients design, construct and operate more profitable, safe and sustainable industrial facilities.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	Speridian Technologies	Exact match	Albuquerque, NM, United StatesHQ recorded Sep 29, 2026	1,001-5,000	2,619 contacts →
	Exact match “Speridian Technologies is a global consulting and technology services firm that helps enterprises and public sector organizations modernize operations, enhance customer experience…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	Trace3	Exact match	Irvine, CA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,345 contacts →
	Exact match “Trace3 delivers business transformation.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8	PAS	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	201-500	1,231 contacts →
	Exact match “PAS, part of Hexagon's Asset Lifecycle Intelligence division, delivers software solutions that prevent, detect, & remediate cyber threats, reduce process safety risks, and…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9	Englobal	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	201-500	1,183 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	Rovisys	Exact match	Aurora, OH, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,159 contacts →
	Exact match “As one of the world's largest independent systems integrators, RoviSys delivers comprehensive automation, digital transformation, manufacturing execution (MES), Industrial AI…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	Captech	Exact match	Richmond, VA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	1,005 contacts →
	Exact match “CapTech is a technology consulting firm focused on defining and delivering what’s next for organizations.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	Interstates	Exact match	Sioux Center, IA, United StatesHQ recorded Sep 29, 2026	1,001-5,000	938 contacts →
	Exact match “As a Partner Interstates is your trusted partner for electrical, automation, and operational technology needs.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Intech Automation & Intelligence	Exact match	Houston, TX, United StatesHQ recorded Sep 29, 2026	501-1,000	879 contacts →
	Exact match “INTECH Automation & Intelligence is a globally renowned industrial automation & digitalization technology company.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Prime Controls	Exact match	Lewisville, TX, United StatesHQ recorded Sep 29, 2026	1,001-5,000	857 contacts →
	Exact match “Prime Controls was established as a Main Automation Contractor to provide customers a sole source solution for Industrial Automation services and products.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Buchanan Technologies	Exact match	Grapevine, TX, United StatesHQ recorded Sep 29, 2026	501-1,000	818 contacts →
	Exact match “As a leading IT consulting and outsourcing services firm, Buchanan Technologies helps organizations across North America turn their business technology into a powerful competitive…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Mobilecomm Professionals, INC	Exact match	Richardson, TX, United StatesHQ recorded Sep 29, 2026	501-1,000	706 contacts →
	Exact match “MobileComm is now fully integrated with UST.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17	Altman Solon	Exact match	Boston, MA, United StatesHQ recorded Sep 29, 2026	501-1,000	669 contacts →
	Exact match “In 2020, Altman Vilandrie & Company and Solon Management Consulting cemented a decades-long partnership across the Atlantic to form Altman Solon, the world’s largest global…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	Ciber Global	Exact match	Troy, MI, United StatesHQ recorded Sep 29, 2026	5,001-10,000	646 contacts →
	Exact match “Ciber Global is now HTC Global Services with effect from November 30, 2021.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	Thirdware Solution INC	Exact match	Livonia, MI, United StatesHQ recorded Sep 29, 2026	1,001-5,000	642 contacts →
	Exact match “Thirdware Solution is a IT consulting organization headquartered in Livonia (Michigan), USA and with offices in Europe and Asia.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	Analytix Solutions	Exact match	Woburn, MA, United StatesHQ recorded Sep 29, 2026	501-1,000	640 contacts →
	Exact match “Welcome to Analytix Solutions!” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	Setpoint Integrated Solutions, INC	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 29, 2026	501-1,000	626 contacts →
	Exact match “Setpoint Integrated Solutions, a Vytl Company is a leading integrated solutions and services provider in the process control industry.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	Mentormate	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 29, 2026	1,001-5,000	626 contacts →
	Exact match “MentorMate is now Tieto!” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	Wunderlich-Malec Engineering, INC	Exact match	Eden Prairie, MN, United StatesHQ recorded Sep 29, 2026	501-1,000	623 contacts →
	Exact match “Wunderlich-Malec Engineering is a nationally recognized, 100% employee-owned leader in advanced engineering and control system solutions.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	Prov International	Exact match	Tampa, FL, United StatesHQ recorded Sep 29, 2026	501-1,000	612 contacts →
	Exact match “ProV is an award winning global technology consulting firm.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	E Tech Group	Exact match	West Chester, OH, United StatesHQ recorded Sep 29, 2026	501-1,000	610 contacts →
	Exact match “E Tech Group is one of the largest engineering and system integration firms in the United States.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “operational technology consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 7,859 operational technology consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 47,222 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Operational technology consulting firms based in the United States at a glance

As of Sep 29, 2026

35.3%Verified-email coverage

17.0Average contacts per company

1-10Median size (employees)

3.6%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

4,772

11-50

2,065

51-200

728

201-500

172

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 7,859 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with the United States whose business descriptions match “operational technology consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 47,222 professional contacts with verified work emails across the full matched dataset. 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 29, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Operational technology consulting firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “operational technology consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many operational technology consulting firms are there based in the United States?

RevenueBase identified 7,859 company matches for operational technology consulting firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Protiviti tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most operational technology consulting firms?

New York leads with 280 company records, followed by Houston (279) and Chicago (151).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 47,222 professional contacts with verified work emails tracked across these 7,859 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 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 SmartSearch, 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.