Company lists · Data refreshed September 2026

Top 25 B2B marketplaces based in the United States

Name: B2B marketplaces based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 7, 2026 1,209 companies tracked

RevenueBase identified 1,209 B2B marketplaces headquartered in the United States as of September 2026 and tracks 58,194 professional contacts across them, including 13,541 with verified work emails and 13,925 with mobile numbers. New York is the largest hub.

This list covers B2B marketplaces 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 7, 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 7, 2026 86% judged on-target in blind review

1,209Companies

58,194Contacts tracked

13,541Verified emails

13,925Mobile numbers

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The 25 largest B2B marketplaces based in the United States

Ranked by team size

Top 25 of 1,209 B2B marketplaces based in the United States, ranked by team size, largest first. Data refreshed Sep 7, 2026. RevenueBase Smart Search rates how each company's information relates to B2B marketplaces: 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 7, 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 7, 2026
2	ETSY	Partial evidence	Brooklyn, NY, United StatesHQ checked Sep 7, 2026	1,001-5,000	6,680 contacts →
	Partial evidence “Etsy is the global marketplace for unique and creative goods.” Source: RevenueBase Database · checked Sep 7, 2026
3	Walmart Marketplace	Partial evidence	Bentonville, AR, United StatesHQ checked Sep 7, 2026	5,001-10,000	4,007 contacts →
	Partial evidence “Walmart Marketplace connects you to millions of customers across categories, with the tools, insights, and support to grow with confidence.” Source: RevenueBase Database · checked Sep 7, 2026
4	Banking	Indirect evidence	Mount Vernon, NY, United StatesHQ checked Sep 7, 2026	n/a	3,703 contacts →
	Indirect evidence “We are the best seller of the biggest online selling platform of the world; Amazon.com.” Source: RevenueBase Database · checked Sep 7, 2026
5	TEMU	Indirect evidence	Boston, MA, United StatesHQ checked Sep 7, 2026	501-1,000	2,427 contacts →
	Indirect evidence “Temu is an e-commerce company that connects consumers with millions of merchandise partners, manufacturers and brands with the mission to empower them to live a better life.” Source: RevenueBase Database · checked Sep 7, 2026
6	Whatnot	Indirect evidence	Los Angeles, United StatesHQ checked Sep 7, 2026	1,001-5,000	1,378 contacts →
	Indirect evidence “Whatnot is the largest livestream shopping platform in the US, UK, and Europe.” Source: RevenueBase Database · checked Sep 7, 2026
7	Stockx	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 7, 2026	1,001-5,000	1,261 contacts →
	Indirect evidence “In a world where consumers increasingly value self-expression and individuality, the market for hard-to-find fashion, collectibles, and electronics has never been hotter.” Source: RevenueBase Database · checked Sep 7, 2026
8	Appdirect	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 7, 2026	501-1,000	924 contacts →
	Partial evidence “AppDirect is a San Francisco-based B2B subscription commerce platform company that brings together technology providers, advisors, and businesses to simplify how they buy, sell…” Source: RevenueBase Database · checked Sep 7, 2026
9	Liquidity Services	Strong evidence	Bethesda, MD, United StatesHQ checked Sep 7, 2026	501-1,000	781 contacts →
	Strong evidence “Liquidity Services (NASDAQ: LQDT) operates the world’s largest B2B e-commerce marketplace platform for surplus assets with over $10 billion in completed transactions to more than…” Source: RevenueBase Database · checked Sep 7, 2026
10	Ebay For Business	Partial evidence	San Jose, CA, United StatesHQ checked Sep 7, 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 7, 2026
11	Mercari US	Partial evidence	Palo Alto, CA, United StatesHQ checked Sep 7, 2026	51-200	591 contacts →
	Partial evidence “Mercari launched in 2013 in Japan, and has since become the largest mobile marketplace in the Japanese market.” Source: RevenueBase Database · checked Sep 7, 2026
12	Thomas	Partial evidence	New York, United StatesHQ checked Sep 7, 2026	201-500	380 contacts →
	Partial evidence “We help B2B buyers and industrial suppliers grow their businesses and their careers.” Source: RevenueBase Database · checked Sep 7, 2026
13	Everything BUT The House Ebth	Partial evidence	Blue Ash, OH, United StatesHQ checked Sep 7, 2026	201-500	378 contacts →
	Partial evidence “Everything But The House (EBTH) is a premier online auction marketplace offering a seamless, fully authenticated experience for buying and selling secondhand goods.” Source: RevenueBase Database · checked Sep 7, 2026
14	Kensium	Partial evidence	Chicago, IL, United StatesHQ checked Sep 7, 2026	201-500	343 contacts →
	Partial evidence “At Kensium, we lead the way in B2B and B2C eCommerce innovation, delivering scalable solutions that drive business growth and competitiveness.” Source: RevenueBase Database · checked Sep 7, 2026
15	Bonanza	Partial evidence	Seattl, United StatesHQ checked Sep 7, 2026	n/a	313 contacts →
	Partial evidence “Bonanza.com is a fast-growing online marketplace of over 15 million items where sellers offer everything from Isometric sunglasses to Bieber perfume.” Source: RevenueBase Database · checked Sep 7, 2026
16	Technologyadvice	Partial evidence	Nashville, TN, United StatesHQ checked Sep 7, 2026	201-500	309 contacts →
	Partial evidence “B2B Technology Advice From Experts Who Use It \| The latest B2B technology and software advice, trends, and guidance coming to you from the experts who work with it every day.” Source: RevenueBase Database · checked Sep 7, 2026
17	WHOP	Indirect evidence	Brooklyn, NY, United StatesHQ checked Sep 7, 2026	51-200	309 contacts →
	Indirect evidence “Whop is a financial technology company on a mission to provide the world with sustainable income.” Source: RevenueBase Database · checked Sep 7, 2026
18	HERO	Indirect evidence	NY, United StatesHQ checked Sep 7, 2026	51-200	300 contacts →
	Indirect evidence “The #1 virtual shopping platform.” Source: RevenueBase Database · checked Sep 7, 2026
19	Andmore	Indirect evidence	Las Vegas, NV, United StatesHQ checked Sep 7, 2026	501-1,000	290 contacts →
	Indirect evidence “ANDMORE, a Blackstone portfolio company, empowers wholesale buyers and sellers to connect, grow and prosper through premier physical markets and design centers.” Source: RevenueBase Database · checked Sep 7, 2026
20	1105 Media	Partial evidence	Woodland Hills, CA, United StatesHQ checked Sep 7, 2026	51-200	278 contacts →
	Partial evidence “1105 Media, Inc, is a leading business-to-business (B2B) services provider whose sole mission is to help our customers grow their business.” Source: RevenueBase Database · checked Sep 7, 2026
21	B-Stock	Partial evidence	San Mateo, CA, United StatesHQ checked Sep 7, 2026	201-500	233 contacts →
	Partial evidence “B-Stock is the world's largest B2B recommerce platform and system of record for all resale.” Source: RevenueBase Database · checked Sep 7, 2026
22	The ODP Corporation	Partial evidence	Boca Raton, FL, United StatesHQ checked Sep 7, 2026	10001+	211 contacts →
	Partial evidence “The ODP Corporation (NASDAQ:ODP) is a leading provider of products and services through an integrated business-to-business (B2B) distribution platform and omnichannel presence…” Source: RevenueBase Database · checked Sep 7, 2026
23	tradewheel.com	Strong evidence	Wilmington, DE, United StatesHQ checked Sep 7, 2026	201-500	199 contacts →
	Strong evidence “Tradewheel.com is the most prominent B2B marketplace for global traders to meet and come together to strengthen cross border trading.” Source: RevenueBase Database · checked Sep 7, 2026
24	Easyecom	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 7, 2026	51-200	182 contacts →
	Indirect evidence “Enabling small scale merchants, manufacturers, retailers to sell their products online.” Source: RevenueBase Database · checked Sep 7, 2026
25	Clutch	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	51-200	182 contacts →
	Partial evidence “Clutch powers how businesses discover, evaluate, and hire the right B2B service partners.” Source: RevenueBase Database · checked Sep 7, 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: B2B marketplaces. 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 B2B marketplaces.
Partial evidence: Its own public description names part of B2B marketplaces, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name B2B marketplaces. 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 1,209 B2B marketplaces based in the United States

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B2B marketplaces based in the United States at a glance

As of Sep 7, 2026

23.3%Verified-email coverage

23.9%Mobile-number coverage

48.1Average contacts per company

1-10Median size (employees)

7.0%Largest-city concentration · New York

Sep 7, 2026Page data refreshed

Companies by employee count

1-10

606

11-50

418

51-200

115

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

12,4410–30

97431–60

1961–90

1190–180

96180+

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 B2B marketplaces, 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 “B2B marketplaces”. 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 B2B marketplaces), 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 B2B marketplaces, 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, 13,541 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 7, 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.

B2B marketplaces by metro

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 B2B marketplaces, 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 B2B marketplaces are there based in the United States?

RevenueBase identified 1,209 B2B marketplaces 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 B2B marketplaces?

New York leads with 85 headquartered companies, followed by Los Angeles (40) and San Francisco (39).

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 13,541 verified decision-maker contacts tracked across these 1,209 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 7, 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.