Company lists · Data refreshed September 2026

Top 25 Online marketplace platforms based in the United States

Name: Online 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 5, 2026 1,412 companies tracked

RevenueBase identified 1,412 online marketplace platforms headquartered in the United States as of September 2026 and tracks 75,019 professional contacts across them, including 16,205 with verified work emails and 17,794 with mobile numbers. New York is the largest hub.

This list covers online 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 5, 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 5, 2026 86% judged on-target in blind review

1,412Companies

75,019Contacts tracked

16,205Verified emails

17,794Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest online marketplace platforms based in the United States

Ranked by team size

Top 25 of 1,412 online marketplace platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to online 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 5, 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 5, 2026
2	ETSY	Partial evidence	Brooklyn, NY, United StatesHQ checked Sep 5, 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 5, 2026
3	Walmart Marketplace	Partial evidence	Bentonville, AR, United StatesHQ checked Sep 5, 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 5, 2026
4	Amazon	Partial evidence	Seattle, WA, United StatesHQ checked Sep 5, 2026	10001+	3,849 contacts →
	Partial evidence “Amazon.com is an ecommerce platform that sells many product lines, including media (books, movies, music, and software), apparel, baby products, consumer electronics, beauty…” Source: RevenueBase Database · checked Sep 5, 2026
5	Clickbank	Indirect evidence	Boise, ID, United StatesHQ checked Sep 5, 2026	n/a	3,516 contacts →
	Indirect evidence “We're Hiring!” Source: RevenueBase Database · checked Sep 5, 2026
6	World Market	Partial evidence	Alameda, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	3,298 contacts →
	Partial evidence “We delight customers with an ever-changing marketplace of unique and beautiful home furnishings, décor, accessories and exceptional gourmet products.” Source: RevenueBase Database · checked Sep 5, 2026
7	The Realreal	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	1,001-5,000	2,462 contacts →
	Strong evidence “The RealReal is the world’s largest online marketplace for authenticated, resale luxury goods.” Source: RevenueBase Database · checked Sep 5, 2026
8	TEMU	Indirect evidence	Boston, MA, United StatesHQ checked Sep 5, 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 5, 2026
9	EBIX	Partial evidence	Johns Creek, GA, United StatesHQ checked Sep 5, 2026	5,001-10,000	1,491 contacts →
	Partial evidence “Ebix operates AI-driven, API-first digital marketplaces that power commerce across multiple industries worldwide.” Source: RevenueBase Database · checked Sep 5, 2026
10	Whatnot	Partial evidence	Los Angeles, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,378 contacts →
	Partial evidence “Whatnot is the largest livestream shopping platform in the US, UK, and Europe.” Source: RevenueBase Database · checked Sep 5, 2026
11	Stockx	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 5, 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 5, 2026
12	Quinstreet	Strong evidence	Foster City, CA, United StatesHQ checked Sep 5, 2026	501-1,000	1,035 contacts →
	Strong evidence “Powering Performance Marketplaces In Digital Media QuinStreet is a pioneer in powering decentralized online marketplaces that match searchers and “research and compare” consumers…” Source: RevenueBase Database · checked Sep 5, 2026
13	Spreetail	Indirect evidence	Lincoln, NE, United StatesHQ checked Sep 5, 2026	1,001-5,000	836 contacts →
	Indirect evidence “Our mission is to propel brands to increase their ecommerce market share across the globe while improving their operational costs.” Source: RevenueBase Database · checked Sep 5, 2026
14	Zazzle	Partial evidence	Redwood City, CA, United StatesHQ checked Sep 5, 2026	201-500	828 contacts →
	Partial evidence “Zazzle is a marketplace of custom products created by designers selling their art and makers showcasing their customizable products.” Source: RevenueBase Database · checked Sep 5, 2026
15	Ebay For Business	Strong evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	10001+	744 contacts →
	Strong 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 5, 2026
16	ARTSY	Strong evidence	New York, United StatesHQ checked Sep 5, 2026	201-500	618 contacts →
	Strong evidence “The world’s largest online art marketplace.” Source: RevenueBase Database · checked Sep 5, 2026
17	RUE Gilt Groupe	Indirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	501-1,000	607 contacts →
	Indirect evidence “Rue Gilt Groupe is a leading off-price e-commerce portfolio company, connecting the next-generation shopper to world-class brands.” Source: RevenueBase Database · checked Sep 5, 2026
18	Mercari US	Partial evidence	Palo Alto, CA, United StatesHQ checked Sep 5, 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 5, 2026
19	Trader Interactive	Partial evidence	Virginia Beach, VA, United StatesHQ checked Sep 5, 2026	201-500	575 contacts →
	Partial 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 5, 2026
20	Everything BUT The House Ebth	Strong evidence	Blue Ash, OH, United StatesHQ checked Sep 5, 2026	201-500	378 contacts →
	Strong 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 5, 2026
21	Offerup	Indirect evidence	Bellevue, WA, United StatesHQ checked Sep 5, 2026	201-500	348 contacts →
	Indirect evidence “OfferUp is on a mission to unleash the power of local.” Source: RevenueBase Database · checked Sep 5, 2026
22	Allconnect	Strong evidence	Fort Mill, SC, United StatesHQ checked Sep 5, 2026	501-1,000	324 contacts →
	Strong evidence “Allconnect is a digital marketplace and customer acquisition platform that connects consumers to essential home services, including internet, TV, utilities, and other home…” Source: RevenueBase Database · checked Sep 5, 2026
23	Bonanza	Strong evidence	Seattl, United StatesHQ checked Sep 5, 2026	n/a	313 contacts →
	Strong 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 5, 2026
24	WHOP	Indirect evidence	Brooklyn, NY, United StatesHQ checked Sep 5, 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 5, 2026
25	HERO	Partial evidence	NY, United StatesHQ checked Sep 5, 2026	51-200	300 contacts →
	Partial evidence “The #1 virtual shopping platform.” Source: RevenueBase Database · checked Sep 5, 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: online 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 online marketplace platforms.
Partial evidence: Its own public description names part of online marketplace platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name online 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 1,412 online marketplace platforms based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 16,205 reachable decision-makers.

Free signup · no credit card

View the full list →

Online marketplace platforms based in the United States at a glance

As of Sep 5, 2026

21.6%Verified-email coverage

23.7%Mobile-number coverage

53.1Average contacts per company

1-10Median size (employees)

9.3%Largest-city concentration · New York

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

750

11-50

446

51-200

126

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

15,0210–30

1,02331–60

1761–90

1390–180

131180+

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 online 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 “online 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 online 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 online 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, 16,205 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 5, 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.

Online marketplace platforms 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 online 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 online marketplace platforms are there based in the United States?

RevenueBase identified 1,412 online 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 online marketplace platforms?

New York leads with 132 headquartered companies, followed by Los Angeles (56) and Miami (47).

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 16,205 verified decision-maker contacts tracked across these 1,412 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 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,412 online marketplace platforms based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Online marketplace platforms by geography

Browse the directory

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.