Company lists · Data refreshed September 2026

Top 25 Industry marketplace platforms based in the United States

Name: Industry marketplace platforms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 561 companies tracked

RevenueBase identified 561 industry marketplace platforms headquartered in the United States as of September 2026 and tracks 36,661 professional contacts across them, including 9,425 with verified work emails. New York is the largest hub.

This list covers industry marketplace platforms 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 28, 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 28, 2026 86% judged on-target in blind review

561Companies

36,661Contacts tracked

9,425Verified emails

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The 25 largest industry marketplace platforms based in the United States

Ranked by team size

Top 25 of 561 industry marketplace platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to industry marketplace platforms: 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	EBAY	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 28, 2026	10001+	20,791 contacts →
	Indirect evidence “At eBay, we create pathways to connect millions of sellers and buyers in more than 190 markets around the world.” Source: RevenueBase Database · checked Sep 28, 2026
2	realtor.com	Indirect evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,810 contacts →
	Indirect evidence “Realtor.com® is the trusted resource for home buyers, sellers and dreamers, offering the most comprehensive source of for-sale properties, among competing national sites, and the…” Source: RevenueBase Database · checked Sep 28, 2026
3	IAA	Partial evidence	Westchester, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	2,173 contacts →
	Partial evidence “IAA Holdings, LLC (IAA), an RB Global company (NYSE: RBA)(TSX: RBA), is a trusted global marketplace for insights, services, and transaction solutions for commercial assets and…” Source: RevenueBase Database · checked Sep 28, 2026
4	Ziprealty	Partial evidence	Emeryville, CA, United StatesHQ checked Sep 28, 2026	n/a	1,825 contacts →
	Partial evidence “ZipRealty is a leading national real estate brokerage and provider of proprietary technology and online marketing tools for the brokerage industry.” Source: RevenueBase Database · checked Sep 28, 2026
5	EBIX	Strong evidence	Johns Creek, GA, United StatesHQ checked Sep 28, 2026	5,001-10,000	1,491 contacts →
	Strong evidence “Ebix operates AI-driven, API-first digital marketplaces that power commerce across multiple industries worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
6	Ebay For Business	Partial evidence	San Jose, CA, United StatesHQ checked Sep 28, 2026	10001+	744 contacts →
	Partial evidence “eBay is one of the world’s largest online marketplaces, connecting people with the things they need and love virtually anytime, anywhere.” Source: RevenueBase Database · checked Sep 28, 2026
7	Trader Interactive	Indirect evidence	Virginia Beach, VA, United StatesHQ checked Sep 28, 2026	201-500	575 contacts →
	Indirect evidence “Trader Interactive is the leading provider of online market places and digital marketing products serving the lifestyle vehicles and commercial equipment segments.” Source: RevenueBase Database · checked Sep 28, 2026
8	Loopnet	Partial evidence	Richmond, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	568 contacts →
	Partial evidence “LoopNet is the most visited commercial real estate marketplace, covering For Sale and For Lease properties across all commercial property categories.” Source: RevenueBase Database · checked Sep 28, 2026
9	Purple Wave Auction	Partial evidence	Manhattan, KS, United StatesHQ checked Sep 28, 2026	201-500	385 contacts →
	Partial evidence “Purple Wave Auction is the leading auction platform redefining auctions and how you buy and sell heavy equipment!” Source: RevenueBase Database · checked Sep 28, 2026
10	Ten-X	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	1,001-5,000	295 contacts →
	Indirect evidence “Ten-X is the #1 transaction technology powering commercial real estate sales online.” Source: RevenueBase Database · checked Sep 28, 2026
11	Bigiron	Indirect evidence	St. Edward, NE, United StatesHQ checked Sep 28, 2026	51-200	200 contacts →
	Indirect evidence “The sights and sounds of auctions are staples of rural America.” Source: RevenueBase Database · checked Sep 28, 2026
12	Ironplanet	Partial evidence	Pleasanton, CA, United StatesHQ checked Sep 28, 2026	201-500	161 contacts →
	Partial evidence “IronPlanet is a leading online marketplace for selling and buying used equipment and other durable assets and an innovative participant in the multi-billion dollar used equipment…” Source: RevenueBase Database · checked Sep 28, 2026
13	Themlsonline	Indirect evidence	Champlin, MN, United StatesHQ checked Sep 28, 2026	11-50	146 contacts →
	Indirect evidence “TheMLSonline.com is Minnesota's leading online real estate destination for active home buyers and sellers.” Source: RevenueBase Database · checked Sep 28, 2026
14	Nuorder By Lightspeed	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 28, 2026	51-200	138 contacts →
	Partial evidence “NuORDER by Lightspeed is a leading B2B platform powering commerce and discovery for the world's best brands and retailers.” Source: RevenueBase Database · checked Sep 28, 2026
15	RCM	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 28, 2026	11-50	121 contacts →
	Partial evidence “Founded in Real Capital Markets (RCM) is the global marketplace for buying and selling commercial real estate (CRE).” Source: RevenueBase Database · checked Sep 28, 2026
16	SOLEO	Indirect evidence	Rochester, NY, United StatesHQ checked Sep 28, 2026	51-200	98 contacts →
	Indirect evidence “For over 20 years, our mission has remained the same: make useful connections for people everywhere, every day.” Source: RevenueBase Database · checked Sep 28, 2026
17	Machinio	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	51-200	82 contacts →
	Indirect evidence “Machinio is the leading global search engine for finding used machinery and equipment.” Source: RevenueBase Database · checked Sep 28, 2026
18	Levanta	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	51-200	81 contacts →
	Partial evidence “Levanta is the unified creator and affiliate platform built for modern e-commerce.” Source: RevenueBase Database · checked Sep 28, 2026
19	Res.Net Corporation	Indirect evidence	Foothill Ranch, CA, United StatesHQ checked Sep 28, 2026	51-200	76 contacts →
	Indirect evidence “RES.NET, initially established in 2003 as an REO management application, has matured into a community for sellers and buyers to manage real estate assets and to connect with the…” Source: RevenueBase Database · checked Sep 28, 2026
20	Trade Service, A Trimble Company	Partial evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	51-200	70 contacts →
	Partial evidence “For over 80 years, Trade Service has provided a common data platform, across several vertical markets, to help trading partners communicate and conduct their daily business.” Source: RevenueBase Database · checked Sep 28, 2026
21	X-Cart	Indirect evidence	Athens, GA, United StatesHQ checked Sep 28, 2026	51-200	69 contacts →
	Indirect evidence “Stand out from your competitors and get your customers’ attention with a digital presence designed to engage.” Source: RevenueBase Database · checked Sep 28, 2026
22	Empire Flippers	Partial evidence	Wilmington, DE, United StatesHQ checked Sep 28, 2026	51-200	67 contacts →
	Partial evidence “Empire Flippers is an INC 500 company and the #1 curated marketplace for buying and selling established and profitable online businesses.” Source: RevenueBase Database · checked Sep 28, 2026
23	Zbuyer	Indirect evidence	Springfield, MO, United StatesHQ checked Sep 28, 2026	11-50	67 contacts →
	Indirect evidence “zBuyer provides a valuable service that allows home sellers to submit their information in real-time to a network of real estate professionals (agents and investors) and direct…” Source: RevenueBase Database · checked Sep 28, 2026
24	Efficient Markets	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	11-50	65 contacts →
	Partial evidence “EnergyNet was originally formed in as the first, and leading, online oil and gas marketplace for buyers and sellers to transact on their own terms and timelines.” Source: RevenueBase Database · checked Sep 28, 2026
25	HUBX	Indirect evidence	Miami, FL, United StatesHQ checked Sep 28, 2026	51-200	51 contacts →
	Indirect evidence “HUBX launched on May 01, 2018 crushing $200M within its first year, and has amassed customers in 101 countries.” Source: RevenueBase Database · checked Sep 28, 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: industry marketplace platforms. 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 industry marketplace platforms.
Partial evidence: Its own public description names part of industry marketplace platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name industry marketplace platforms. 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 561 industry marketplace platforms based in the United States

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Industry marketplace platforms based in the United States at a glance

As of Sep 28, 2026

25.7%Verified-email coverage

65.3Average contacts per company

1-10Median size (employees)

7.0%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

298

11-50

196

51-200

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 561 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 industry marketplace platforms, 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 “industry marketplace platforms”. 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 industry marketplace platforms), 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 industry marketplace platforms, 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, 9,425 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 28, 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.

Industry marketplace platforms by metro

Industry marketplace platforms in New York39

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 industry marketplace platforms, 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 industry marketplace platforms are there based in the United States?

RevenueBase identified 561 industry marketplace platforms 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?

EBAY, headquartered in San Jose, tops this list with the largest team on record.

Which city has the most industry marketplace platforms?

New York leads with 39 headquartered companies, followed by Los Angeles (24) and Miami (18).

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 9,425 verified decision-maker contacts tracked across these 561 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 28, 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.