Company lists · Data refreshed September 2026

Top 25 Operational technology consulting firms based in Houston, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 279 companies tracked

RevenueBase identified 279 operational technology consulting firms headquartered in Houston, United States as of September 2026 and tracks 8,389 professional contacts across them, including 2,127 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers operational technology consulting firms headquartered in Houston, 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 29, 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 29, 2026 86% judged on-target in blind review

279Companies

8,389Contacts tracked

2,127Verified emails

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The 25 largest operational technology consulting firms based in Houston, United States

Ranked by team size

Top 25 of 279 operational technology consulting firms based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to operational technology consulting firms: 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	PAS	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	1,231 contacts →
	Indirect evidence “PAS, part of Hexagon's Asset Lifecycle Intelligence division, delivers software solutions that prevent, detect, & remediate cyber threats, reduce process safety risks, and…” Source: RevenueBase Database · checked Sep 29, 2026
2	Englobal	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	1,183 contacts →
	Indirect 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 29, 2026
3	Intech Automation & Intelligence	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	501-1,000	879 contacts →
	Partial evidence “INTECH Automation & Intelligence is a globally renowned industrial automation & digitalization technology company.” Source: RevenueBase Database · checked Sep 29, 2026
4	Ingenero	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	501-1,000	532 contacts →
	Indirect evidence “Ingenero's goal is to be the best process engineering firm by delivering the highest quality service and software solutions at the lowest cost.” Source: RevenueBase Database · checked Sep 29, 2026
5	Sira Consulting, An INC 5000 Company	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	329 contacts →
	Partial evidence “SiRA Consulting is a Certified MBE consulting company that was founded in 2012.” Source: RevenueBase Database · checked Sep 29, 2026
6	Amerapex	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	501-1,000	280 contacts →
	Strong evidence “Amerapex Corporation is a technology, engineering and industrial services company based in Houston, TX with operations globally, offering technical expertise in processes and…” Source: RevenueBase Database · checked Sep 29, 2026
7	Recode Solutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	173 contacts →
	Partial evidence “Recode Solutions is a specialized Industry 4.0 technology services company, focused on accelerating digital transformation for our clients.” Source: RevenueBase Database · checked Sep 29, 2026
8	Fulcrum Technology Solutions	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	124 contacts →
	Partial evidence “The Fulcrum team of technologists are recognized experts in the fields of IT Infrastructure Technology, Security, Service Management and Support.” Source: RevenueBase Database · checked Sep 29, 2026
9	Acet Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	106 contacts →
	Indirect evidence “ACET SOLUTIONS is a global OT Cybersecurity and Digital Transformation company serving the critical infrastructure industries.” Source: RevenueBase Database · checked Sep 29, 2026
10	Integration Objects	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	106 contacts →
	Partial evidence “Integration objects is a world-leading systems integrator and solutions provider specialized in operations and manufacturing intelligence, advanced analytics, preventive detection…” Source: RevenueBase Database · checked Sep 29, 2026
11	Everline	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	201-500	102 contacts →
	Indirect evidence “EverLine provides fully-integrated compliance, SCADA/IT, control room and security services to more than 200 customers nationwide through a unique Technical Stack.” Source: RevenueBase Database · checked Sep 29, 2026
12	Sis-Tech	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	102 contacts →
	Indirect evidence “We are a respected and innovative solutions provider focusing on process safety, reliability and control.” Source: RevenueBase Database · checked Sep 29, 2026
13	Newton Vision CO	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	101 contacts →
	Strong evidence “We are a modern consulting firm that partners with organizations to align strategy, people, and technology to maximize enterprise value.” Source: RevenueBase Database · checked Sep 29, 2026
14	Qadworks	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	95 contacts →
	Partial evidence “QADWorks is a Texas based IT consulting company founded in 2019.” Source: RevenueBase Database · checked Sep 29, 2026
15	Soap Engineering, LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	87 contacts →
	Indirect evidence “We have earned a reputation as a global leader in Design/Build & Systems Integration for more than 30 years.” Source: RevenueBase Database · checked Sep 29, 2026
16	Antares Tech	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	61 contacts →
	Strong evidence “ANTARES TECH SERVICES is a company focused on the automation and information technology services market, with strong experience in steel firms, providing consulting services…” Source: RevenueBase Database · checked Sep 29, 2026
17	Cognascents Consulting Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	54 contacts →
	Indirect evidence “Cognascents brings process safety and asset integrity expertise together under one roof.” Source: RevenueBase Database · checked Sep 29, 2026
18	Pilko & Associates	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	50 contacts →
	Partial evidence “We are the trusted Advisor to corporate officers and boards on mitigating Operational/EHS Risks and unlocking value for global energy, chemical and industrial companies.” Source: RevenueBase Database · checked Sep 29, 2026
19	Erdos Miller	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	47 contacts →
	Partial evidence “Our clients believe they can change the market with their idea, and they need a technology partner to come alongside them and challenge, vet, and better that idea.” Source: RevenueBase Database · checked Sep 29, 2026
20	TRU Solutions	Indirect evidence	Houston, United StatesHQ checked Sep 29, 2026	51-200	46 contacts →
	Indirect evidence “We are TRU, and we deliver simple digital solutions to safeguard critical industrial assets.” Source: RevenueBase Database · checked Sep 29, 2026
21	3545 Consulting-Global	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	42 contacts →
	Partial evidence “3545 Consulting ™ specializes in implementing hardware, software, and service solutions for a variety of businesses, including law firms, legal entities, educational institutions…” Source: RevenueBase Database · checked Sep 29, 2026
22	Priserve Consulting INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	38 contacts →
	Partial evidence “PriServe Group company engaged in Technology and Engineering Services” Source: RevenueBase Database · checked Sep 29, 2026
23	Indigo Beam Consulting	Strong evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	37 contacts →
	Strong evidence “Indigo Beam Consulting represents a common sense approach to solving business problems through technology.” Source: RevenueBase Database · checked Sep 29, 2026
24	Approach Controls, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	11-50	34 contacts →
	Indirect evidence “Approach Controls is a top provider of reliable instrumentation, control systems, and data management.” Source: RevenueBase Database · checked Sep 29, 2026
25	X Celerant	Indirect evidence	Houston, TX, United StatesHQ checked Sep 29, 2026	51-200	31 contacts →
	Indirect evidence “At X/Celerant, we help organizations in Chemicals, Construction, Manufacturing, and Energy unlock trapped value, optimize performance, and drive measurable, lasting results.” Source: RevenueBase Database · checked Sep 29, 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: operational technology consulting firms. 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 operational technology consulting firms.
Partial evidence: Its own public description names part of operational technology consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name operational technology consulting firms. 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 279 operational technology consulting firms based in Houston, United States

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Operational technology consulting firms based in Houston, United States at a glance

As of Sep 29, 2026

25.4%Verified-email coverage

30.1Average contacts per company

11-50Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

138

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 279 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 operational technology consulting firms, 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 Houston, United States whose own description of what they do matches “operational technology consulting firms”. 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 operational technology consulting firms), 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 operational technology consulting firms, and records with no verified work email. Companies headquartered outside Houston 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, 2,127 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 29, 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.

Operational technology consulting firms by metro in the United States

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 operational technology consulting firms, 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 operational technology consulting firms are there based in Houston, United States?

RevenueBase identified 279 operational technology consulting firms headquartered in Houston, 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?

PAS, headquartered in Houston, tops this list with the largest team on record.

Which city in the United States has the most operational technology consulting firms?

Houston leads the United States with 279 headquartered companies, followed by New York (266) and Chicago (151).

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 2,127 verified decision-maker contacts tracked across these 279 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 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 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.