Company lists · Data refreshed September 2026

Top 24 IT consulting firms based in Irvine, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 155 companies tracked

RevenueBase identified 155 IT consulting firms headquartered in Irvine, United States as of September 2026 and tracks 2,951 professional contacts across them, including 949 with verified work emails. New York is the largest hub.

This list covers IT consulting firms headquartered in Irvine, 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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 HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

155Companies

2,951Contacts tracked

949Verified emails

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The 24 largest IT consulting firms based in Irvine, United States

Ranked by team size

Top 24 of 155 IT consulting firms based in Irvine, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names IT consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Foothill Technology Solutions, LLCIndirect evidence	Irvine, United StatesHQ checked Sep 4, 2026	201-500	309
	“Foothill Technology Solutions is a Software development company.” Source: company website · checked Sep 4, 2026
2	Neelblue TechnologiesStrong evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	51-200	158
	“NeelBlue Technologies provides IT consulting and technical expertise to all its clients across the globe.” Source: company website · checked Sep 4, 2026
3	XcentiumIndirect evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	201-500	139
	“XCentium is a digital consultancy focused on helping enterprises align their technology strategy with business goals to drive transformation, innovation, and sustainable growth.” Source: company website · checked Sep 4, 2026
4	EjamericaStrong evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	501-1,000	129
	“We provide Digital Application Services, Cyber Security Services, IT Consulting Services, Modern End-User Services, Data Center and Cloud Services and IT Staffing services.” Source: company website · checked Sep 4, 2026
5	O2 Technologies,incIndirect evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	1,001-5,000	100
	“O2 Technology attracts imaginative citizens from all types of backgrounds, bringing together excitement and new dreams to meet challenges and appreciate their talent.” Source: company website · checked Sep 4, 2026
6	West Coast ConsultingPartial evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	201-500	88
	“West Coast Consulting is a privately held boutique consulting firm formed in 1998, specializing in providing Information Technology solutions and Outsourcing services.” Source: company website · checked Sep 4, 2026
7	IndusaPartial evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	501-1,000	81
	“Synoptek (previously Indusa) is a global systems integrator and managed IT services provider, offering comprehensive IT management and consultancy services to organizations…” Source: company website · checked Sep 4, 2026
8	Abotts Consulting INCStrong evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	51-200	64
	“ABOTTS is a consulting and staffing services company headquartered in Irvine, California, focused on meeting both IT and non-IT needs of our clients.” Source: company website · checked Sep 4, 2026
9	Red8Partial evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	201-500	59
	“Red8, a division of Insight Capital Solutions, is a leading IT solutions provider helping organizations solve complex technology challenges and accelerate digital transformation.” Source: company website · checked Sep 4, 2026
10	Intueor Consulting, INCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	51-200	51
	“Intueor specializes in Strategy, Operations & Business Productivity advisory work.” Source: company website · checked Sep 4, 2026
11	SMS DatacenterStrong evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	51-200	50
	“Founded in 1982, SMS is a leading provider of Managed Services, IT Strategy & Consulting, Software Development & Analytics, Private Managed Cloud, and Colocation Services.” Source: company website · checked Sep 4, 2026
12	T-Force GroupPartial evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	201-500	39
	“T-Force is a Premier telecommunication technology Consulting and Services Company offering innovative solutions, helping customers design, engineer, integrate and maintain…” Source: company website · checked Sep 4, 2026
13	Airgap Labs LLCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	11-50	27
	“Fostering Client growth and success.” Source: company website · checked Sep 4, 2026
14	Right Click, INCStrong evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	11-50	27
	“Right Click is an Orange County based IT Consulting firm.” Source: company website · checked Sep 4, 2026
15	NexvisionixIndirect evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	51-200	27
	“At Nexvisionix, we specialize in driving Strategy and Execution excellence, leveraging cutting-edge AI and software to guide global organizations towards breakthrough business…” Source: company website · checked Sep 4, 2026
16	Muverity Consultancy ServicesPartial evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	11-50	25
	“muVerity is an information technology consulting and business solutions company that aspires to be the helm in your digital transformation journey.” Source: company website · checked Sep 4, 2026
17	Allied ConsultantsPartial evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	51-200	15
	“Allied Consultants is a technology consulting firm specializing in Enterprise Application Integration, Business Intelligence, Web 2.0 and Mobile Development.” Source: company website · checked Sep 4, 2026
18	Consiliant TechnologiesIndirect evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	11-50	14
	“Consiliant Technologies was founded on the belief that organizations should realize greater business value from their technology investments.” Source: company website · checked Sep 4, 2026
19	Flying ButtressPartial evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	11-50	13
	“Flying Buttress is the leading provider of IT solutions for the Architectural and Engineering & Design industries.” Source: company website · checked Sep 4, 2026
20	S90 TechopsPartial evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	1-10	9
	“We design and implement strategic IT solutions & services for dynamic businesses in Orange County.” Source: company website · checked Sep 4, 2026
21	Helia SystemsPartial evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	11-50	9
	“We are a dynamic and forward-thinking software consulting business committed to driving digital transformation for our clients.” Source: company website · checked Sep 4, 2026
22	Emergent DataIndirect evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	11-50	9
	“Emergent Data is a global consultancy that helps clients drive change across the entire data and software ecosystem.” Source: company website · checked Sep 4, 2026
23	Entrust Software DevelopmentIndirect evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	51-200	9
	“Entrust Software Development, also known as ESDI Software Development US, is a global development company with offices in the United States and India.” Source: company website · checked Sep 4, 2026
24	Saguna Consulting Services LLCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 4, 2026	51-200	8
	“We are a company of builders, visionaries and strategists.” Source: company website · checked Sep 4, 2026

Showing 24 of 155 IT consulting firms based in Irvine, United States

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IT consulting firms based in Irvine, United States at a glance

As of Sep 4, 2026

11-50Median size (employees)

New YorkLargest hub · 1002 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 155 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 IT consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Irvine, United States whose own description of what they do matches “IT consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among IT consulting firms, and records with no verified work email. Companies headquartered outside Irvine 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 an evidence 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, 949 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 4, 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.

IT consulting firms by metro in the United States

Frequently asked

How many IT consulting firms are there based in Irvine, United States?

RevenueBase identified 155 IT consulting firms headquartered in Irvine, 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?

Foothill Technology Solutions, LLC, headquartered in Irvine, tops this list with the largest team on record.

Which city has the most IT consulting firms?

New York leads with 1002 headquartered companies, followed by Houston (627) and Dallas (504).

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 949 verified decision-maker contacts tracked across these 155 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 4, 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.