Company lists · Data refreshed September 2026

Top 25 Business advisory and consulting firms based in Irvine, United States

Name: Business advisory and 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 23, 2026 150 companies tracked

RevenueBase identified 150 business advisory and consulting firms headquartered in Irvine, United States as of September 2026 and tracks 1,224 professional contacts across them, including 545 with verified work emails. New York is the largest hub.

This list covers business advisory and 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 23, 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 23, 2026 86% judged on-target in blind review

150Companies

1,224Contacts tracked

545Verified emails

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The 25 largest business advisory and consulting firms based in Irvine, United States

Ranked by team size

Top 25 of 150 business advisory and consulting firms based in Irvine, United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business advisory and 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	Haskell & White LLP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	51-200	133 contacts →
	Partial evidence “Haskell & White LLP is one of the largest independently owned accounting, auditing and tax consulting firms in Southern California, specializing in servicing public and private…” Source: RevenueBase Database · checked Sep 23, 2026
2	Wright Ford Young & CO	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	51-200	93 contacts →
	Indirect evidence “We are a full service mezzanine accounting firm that provides an atmosphere where people can flourish in their careers, while at the same time, being able to have meaningful…” Source: RevenueBase Database · checked Sep 23, 2026
3	Squar Milner	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	501-1,000	84 contacts →
	Partial evidence “Squar Milner is one of the nation’s 40 largest accounting firms as well as one of the largest independent accounting and advisory firms in California.” Source: RevenueBase Database · checked Sep 23, 2026
4	Omega Accounting Solutions	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	70 contacts →
	Partial evidence “Omega Accounting Solutions is a financial and tax advisory based in Irvine, California that empowers small and medium-sized businesses (SMBs) to make better-informed decisions.” Source: RevenueBase Database · checked Sep 23, 2026
5	RJI Cpas	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	51-200	59 contacts →
	Partial evidence “RJI CPAs is a full-service accounting and consulting firm based in Irvine, California.” Source: RevenueBase Database · checked Sep 23, 2026
6	Intueor Consulting, INC	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	51-200	52 contacts →
	Partial evidence “Intueor specializes in Strategy, Operations & Business Productivity advisory work.” Source: RevenueBase Database · checked Sep 23, 2026
7	Skinner Fouch & Olson LLP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	44 contacts →
	Partial evidence “Our purpose is to add value to the business of our clientele through transactional specific and organizational business advisory services.” Source: RevenueBase Database · checked Sep 23, 2026
8	MLC And Associates	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	38 contacts →
	Partial evidence “MLC and Associates is an award-winning, world-class management consulting firm, recognized for helping companies in every industry with business continuity, corporate performance…” Source: RevenueBase Database · checked Sep 23, 2026
9	Nexvisionix	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	51-200	27 contacts →
	Indirect evidence “At Nexvisionix, we specialize in driving Strategy and Execution excellence, leveraging cutting-edge AI and software to guide global organizations towards breakthrough business…” Source: RevenueBase Database · checked Sep 23, 2026
10	Bharmal & Associates, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	1-10	23 contacts →
	Indirect evidence “We are no ordinary accounting firm.” Source: RevenueBase Database · checked Sep 23, 2026
11	Jc&company LLP	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	23 contacts →
	Indirect evidence “JC & Company LLP is a professional firm committed to serving the needs of our clients.” Source: RevenueBase Database · checked Sep 23, 2026
12	White Nelson Diehl Evans LLP	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	51-200	21 contacts →
	Indirect evidence “White Nelson Diehl Evans LLP is a full-service accounting firm that prides itself on delivering personal service while supporting your most demanding global needs.” Source: RevenueBase Database · checked Sep 23, 2026
13	Connexus HUB	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	20 contacts →
	Partial evidence “Connexus Hub is a boutique business and technology advisory firm that specializes in CIO advisory, IT PMO support, and business transformation services, training, and operations…” Source: RevenueBase Database · checked Sep 23, 2026
14	Force 10 Partners	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	18 contacts →
	Partial evidence “Force Ten Partners LLC is an advisory firm with deep domain knowledge in financial and operational corporate restructuring, valuation, forensic accounting and complex litigation…” Source: RevenueBase Database · checked Sep 23, 2026
15	NBB	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	16 contacts →
	Indirect evidence “Guiding entrepreneurs through their most significant business milestones.” Source: RevenueBase Database · checked Sep 23, 2026
16	Mentor Global Consultants	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	16 contacts →
	Partial evidence “MENTOR is a management consulting firm that helps organizations to improve performance and reach their full potential, by offering a unique combination of business solutions.” Source: RevenueBase Database · checked Sep 23, 2026
17	Afps LLP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	14 contacts →
	Partial evidence “AFPS LLP is an independently owned tax, accounting, and auditing consulting firm located in Irvine, California and is recognized throughout Orange County as a leading authority in…” Source: RevenueBase Database · checked Sep 23, 2026
18	Salt Creek Partners	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	13 contacts →
	Partial evidence “Salt Creek Partners (SCP) is a full-service M&A advisory firm guiding business leaders in the emerging and middle markets.” Source: RevenueBase Database · checked Sep 23, 2026
19	Smith Dickson, Certified Public Accountants, LLP	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	12 contacts →
	Indirect evidence “Founded in 1982, Smith Dickson, Certified Public Accountants, LLP, is a full-service Southern California CPA firm that specializes in providing high-quality services designed to…” Source: RevenueBase Database · checked Sep 23, 2026
20	Maxwell & Company Cpa's, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	51-200	11 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
21	Basecamp Consulting Group	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	1-10	11 contacts →
	Indirect evidence “Since 2020, BASECAMP has earned the trust of more than 100+ founder-led brands, known for its Founder’s Mindset and above-and-beyond support for their clients.” Source: RevenueBase Database · checked Sep 23, 2026
22	Abregov Parrino, LLP	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	1-10	10 contacts →
	Partial evidence “Abregov Parrino, LLP is a full-service Certified Public Accounting and Business Advisory firm that specializes in helping individuals and privately held businesses by providing…” Source: RevenueBase Database · checked Sep 23, 2026
23	Matrixpoint Consulting	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	9 contacts →
	Partial evidence “MatrixPoint Consulting helps brand executives in QSR, CPG, and retail grow through marketing they can measure.” Source: RevenueBase Database · checked Sep 23, 2026
24	Gonzalez CPA	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	9 contacts →
	Partial evidence “Founded in 2001 Gonzalez CPA is a fully certified public accounting firm which has been practicing accounting, tax strategies, and management consulting for 15 years.” Source: RevenueBase Database · checked Sep 23, 2026
25	Areté Advisors	Partial evidence	Irvine, CA, United StatesHQ checked Sep 23, 2026	11-50	9 contacts →
	Partial evidence “At Areté Advisors, we believe every client deserves expert financial guidance, not just at tax time, but throughout every stage of their business and personal financial journey.” Source: RevenueBase Database · checked Sep 23, 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: business advisory and 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 business advisory and consulting firms.
Partial evidence: Its own public description names part of business advisory and consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business advisory and 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 150 business advisory and consulting firms based in Irvine, United States

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Business advisory and consulting firms based in Irvine, United States at a glance

As of Sep 23, 2026

44.5%Verified-email coverage

8.2Average contacts per company

1-10Median size (employees)

1263.3%Largest-city concentration · New York

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

103

11-50

51-200

501-1,000

Email recency for this list is measured across the whole United States list rather than for Irvine, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 150 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 business advisory and 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 Irvine, United States whose own description of what they do matches “business advisory and 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 business advisory and 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 business advisory and 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 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, 545 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 23, 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.

Business advisory and consulting firms by metro in the United States

Business advisory and consulting firms in New York1895
Business advisory and consulting firms in Atlanta839
Business advisory and consulting firms in Chicago826
Business advisory and consulting firms in Los Angeles722
Business advisory and consulting firms in Houston706
Business advisory and consulting firms in Miami587
Business advisory and consulting firms in Dallas564
Business advisory and consulting firms in Washington520
Business advisory and consulting firms in Austin479
Business advisory and consulting firms in San Francisco454
Business advisory and consulting firms in Denver421
Business advisory and consulting firms in Boston419
Business advisory and consulting firms in San Diego333
Business advisory and consulting firms in Charlotte308
Business advisory and consulting firms in Seattle289
Business advisory and consulting firms in Tampa282
Business advisory and consulting firms in Minneapolis267
Business advisory and consulting firms in Phoenix259
Business advisory and consulting firms in Orlando240
Business advisory and consulting firms in Philadelphia224
Business advisory and consulting firms in Portland218
Business advisory and consulting firms in Las Vegas198
Business advisory and consulting firms in Nashville196
Business advisory and consulting firms in Scottsdale182
Business advisory and consulting firms in Raleigh178
Business advisory and consulting firms in Columbus177
Business advisory and consulting firms in Cincinnati170
Business advisory and consulting firms in San Antonio162
Business advisory and consulting firms in New York City158
Business advisory and consulting firms in Irvine150
Business advisory and consulting firms in Fort Lauderdale143
Business advisory and consulting firms in Indianapolis141
Business advisory and consulting firms in Cleveland137
Business advisory and consulting firms in Pittsburgh134
Business advisory and consulting firms in Arlington127
Business advisory and consulting firms in Richmond123
Business advisory and consulting firms in Newport Beach121
Business advisory and consulting firms in Boca Raton118
Business advisory and consulting firms in Baltimore117
Business advisory and consulting firms in Wilmington116
Business advisory and consulting firms in Detroit114
Business advisory and consulting firms in Salt Lake City112
Business advisory and consulting firms in Fort Worth111
Business advisory and consulting firms in Kansas City111
Business advisory and consulting firms in Jacksonville109
Business advisory and consulting firms in San Jose109
Business advisory and consulting firms in Boulder90
Business advisory and consulting firms in St. Louis90
Business advisory and consulting firms in Sacramento88
Business advisory and consulting firms in Alexandria87
Business advisory and consulting firms in Birmingham86
Business advisory and consulting firms in Milwaukee86
Business advisory and consulting firms in Plano86
Business advisory and consulting firms in Greenville84
Business advisory and consulting firms in Columbia83
Business advisory and consulting firms in Omaha83
Business advisory and consulting firms in Bellevue82
Business advisory and consulting firms in Rochester81
Business advisory and consulting firms in Tulsa80
Business advisory and consulting firms in Madison79
Business advisory and consulting firms in Louisville78
Business advisory and consulting firms in Charleston76
Business advisory and consulting firms in Frisco76
Business advisory and consulting firms in Sheridan76
Business advisory and consulting firms in Alpharetta75
Business advisory and consulting firms in West Palm Beach73
Business advisory and consulting firms in Sarasota68
Business advisory and consulting firms in Boise67
Business advisory and consulting firms in Brooklyn67
Business advisory and consulting firms in Grand Rapids67
Business advisory and consulting firms in Princeton66
Business advisory and consulting firms in Colorado Springs65
Business advisory and consulting firms in Franklin63
Business advisory and consulting firms in Beverly Hills61
Business advisory and consulting firms in Lexington61
Business advisory and consulting firms in Fairfax60
Business advisory and consulting firms in New Orleans58
Business advisory and consulting firms in Virginia Beach58
Business advisory and consulting firms in Marietta56
Business advisory and consulting firms in Naples56
Business advisory and consulting firms in Bethesda55
Business advisory and consulting firms in Coral Gables55
Business advisory and consulting firms in Overland Park55
Business advisory and consulting firms in Mclean54
Business advisory and consulting firms in Oakland54
Business advisory and consulting firms in Oklahoma City54
Business advisory and consulting firms in Knoxville53
Business advisory and consulting firms in Tucson53
Business advisory and consulting firms in Memphis52
Business advisory and consulting firms in The Woodlands52
Business advisory and consulting firms in Remote51
Business advisory and consulting firms in Rockville51
Business advisory and consulting firms in Greensboro49
Business advisory and consulting firms in Palo Alto49
Business advisory and consulting firms in Santa Monica49
Business advisory and consulting firms in Albuquerque48
Business advisory and consulting firms in Reston48
Business advisory and consulting firms in Albany47
Business advisory and consulting firms in Naperville47
Business advisory and consulting firms in Annapolis46
Business advisory and consulting firms in Baton Rouge46
Business advisory and consulting firms in Buffalo46
Business advisory and consulting firms in Henderson46
Business advisory and consulting firms in Pasadena46
Business advisory and consulting firms in Springfield46
Business advisory and consulting firms in Carmel44
Business advisory and consulting firms in Jersey City44
Business advisory and consulting firms in Reno44
Business advisory and consulting firms in Stamford44
Business advisory and consulting firms in Carlsbad43
Business advisory and consulting firms in Irving43
Business advisory and consulting firms in St Louis43
Business advisory and consulting firms in Dover42
Business advisory and consulting firms in Mckinney41
Business advisory and consulting firms in Ann Arbor39
Business advisory and consulting firms in Concord39
Business advisory and consulting firms in Durham39
Business advisory and consulting firms in Fort Wayne39
Business advisory and consulting firms in Hollywood39
Business advisory and consulting firms in Honolulu39
Business advisory and consulting firms in Lafayette39
Business advisory and consulting firms in Roswell39
Business advisory and consulting firms in Greenwich38
Business advisory and consulting firms in Long Beach38
Business advisory and consulting firms in Miami Beach38
Business advisory and consulting firms in Troy38
Business advisory and consulting firms in Vienna38
Business advisory and consulting firms in Cambridge37
Business advisory and consulting firms in Dayton37
Business advisory and consulting firms in Lancaster37
Business advisory and consulting firms in Northbrook37
Business advisory and consulting firms in Palm Beach Gardens37
Business advisory and consulting firms in St Petersburg37
Business advisory and consulting firms in Wichita37
Business advisory and consulting firms in West Chester36
Business advisory and consulting firms in Burlington35
Business advisory and consulting firms in Newark35
Business advisory and consulting firms in Winter Park35
Business advisory and consulting firms in Cary34
Business advisory and consulting firms in Jackson34
Business advisory and consulting firms in Weston34
Business advisory and consulting firms in Bend33
Business advisory and consulting firms in Brentwood33
Business advisory and consulting firms in Canton33
Business advisory and consulting firms in Delray Beach33
Business advisory and consulting firms in Fayetteville33
Business advisory and consulting firms in Orange County33
Business advisory and consulting firms in Silver Spring33
Business advisory and consulting firms in St. Petersburg33
Business advisory and consulting firms in Asheville32
Business advisory and consulting firms in Dublin32
Business advisory and consulting firms in Fort Myers32
Business advisory and consulting firms in Providence32
Business advisory and consulting firms in Santa Barbara32
Business advisory and consulting firms in Savannah32
Business advisory and consulting firms in Akron31
Business advisory and consulting firms in Katy31
Business advisory and consulting firms in Leesburg31
Business advisory and consulting firms in Tallahassee31
Business advisory and consulting firms in Evanston30
Business advisory and consulting firms in Frederick30
Business advisory and consulting firms in Gainesville30
Business advisory and consulting firms in Gaithersburg30
Business advisory and consulting firms in Gilbert30
Business advisory and consulting firms in Greenwood Village30
Business advisory and consulting firms in Huntsville30
Business advisory and consulting firms in Lakewood30
Business advisory and consulting firms in Saint Louis30
Business advisory and consulting firms in Southlake30
Business advisory and consulting firms in Syracuse30
Business advisory and consulting firms in Vancouver30
Business advisory and consulting firms in Ashburn29
Business advisory and consulting firms in Little Rock29
Business advisory and consulting firms in Littleton29
Business advisory and consulting firms in York29
Business advisory and consulting firms in Clearwater28
Business advisory and consulting firms in Herndon28
Business advisory and consulting firms in Plymouth28
Business advisory and consulting firms in Spokane28
Business advisory and consulting firms in Worth28
Business advisory and consulting firms in Anchorage27
Business advisory and consulting firms in Chandler27
Business advisory and consulting firms in Chattanooga27
Business advisory and consulting firms in Coral Springs27
Business advisory and consulting firms in Des Moines27
Business advisory and consulting firms in Fairfield27
Business advisory and consulting firms in Fishers27
Business advisory and consulting firms in Manhattan Beach27
Business advisory and consulting firms in Portsmouth27
Business advisory and consulting firms in Spring27
Business advisory and consulting firms in Sunnyvale27
Business advisory and consulting firms in Walnut Creek27
Business advisory and consulting firms in Westport27
Business advisory and consulting firms in Aurora26
Business advisory and consulting firms in Charlottesville26
Business advisory and consulting firms in Costa Mesa26
Business advisory and consulting firms in Hartford26
Business advisory and consulting firms in Mountain View26
Business advisory and consulting firms in Bloomfield Hills25
Business advisory and consulting firms in Cheyenne25
Business advisory and consulting firms in Decatur25
Business advisory and consulting firms in Doral25
Business advisory and consulting firms in Fresno25
Business advisory and consulting firms in Harrisburg25
Business advisory and consulting firms in Lake Forest25
Business advisory and consulting firms in Lake Oswego25
Business advisory and consulting firms in Newton25
Business advisory and consulting firms in Pleasanton25
Business advisory and consulting firms in Santa Clara25
Business advisory and consulting firms in Sioux Falls25
Business advisory and consulting firms in Tempe25

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 business advisory and 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 business advisory and consulting firms are there based in Irvine, United States?

RevenueBase identified 150 business advisory and 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?

Haskell & White LLP, headquartered in Irvine, tops this list with the largest team on record.

Which city has the most business advisory and consulting firms?

New York leads with 1895 headquartered companies, followed by Atlanta (839) and Chicago (826).

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 545 verified decision-maker contacts tracked across these 150 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 23, 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.