Company lists · Data refreshed September 2026

Top 25 Marketplace platforms based in the United States

Name: 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 3,150 companies tracked

RevenueBase identified 3,150 marketplace platforms headquartered in the United States as of September 2026 and tracks 107,599 professional contacts across them, including 25,148 with verified work emails and 24,898 with mobile numbers. New York is the largest hub.

This list covers 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

3,150Companies

107,599Contacts tracked

25,148Verified emails

24,898Mobile numbers

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The 25 largest marketplace platforms based in the United States

Ranked by team size

Top 25 of 3,150 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 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	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
8	IAA	Partial evidence	Westchester, IL, United StatesHQ checked Sep 5, 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 5, 2026
9	Pax8	Strong evidence	Greenwood Village, CO, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,874 contacts →
	Strong evidence “Pax8 is the leading global Marketplace for SMBs, connecting IT service providers, technology companies and end customers on a unified platform to discover, buy, sell, deploy and…” Source: RevenueBase Database · checked Sep 5, 2026
10	Flywheel	Indirect evidence	Baltimore, MD, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,706 contacts →
	Indirect evidence “Flywheel, the commerce arm of Omnicom Media, provides best-in-class service that combines tailored expertise with advanced software solutions to help clients drive incremental…” Source: RevenueBase Database · checked Sep 5, 2026
11	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
12	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
13	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
14	Quinstreet	Partial evidence	Foster City, CA, United StatesHQ checked Sep 5, 2026	501-1,000	1,035 contacts →
	Partial 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
15	Appdirect	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 5, 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 5, 2026
16	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
17	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
18	Liquidity Services	Strong evidence	Bethesda, MD, United StatesHQ checked Sep 5, 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 5, 2026
19	Bigcommerce	Partial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	746 contacts →
	Partial evidence “BigCommerce, powered by Commerce (Nasdaq: CMRC), is the flexible enterprise ecommerce platform built for growth without compromise.” Source: RevenueBase Database · checked Sep 5, 2026
20	Ebay For Business	Partial evidence	San Jose, CA, United StatesHQ checked Sep 5, 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 5, 2026
21	Teespring	Indirect evidence	San Franciso, CA, United StatesHQ checked Sep 5, 2026	201-500	731 contacts →
	Indirect evidence “Teespring is now Spring.” Source: RevenueBase Database · checked Sep 5, 2026
22	Unilog	Partial evidence	Plymouth Meeting, PA, United StatesHQ checked Sep 5, 2026	501-1,000	689 contacts →
	Partial evidence “Unilog is the leader in connected product content and commerce, delivering the platform, content, and connectivity businesses need to succeed in the digital arena.” Source: RevenueBase Database · checked Sep 5, 2026
23	Constructor	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	201-500	671 contacts →
	Partial evidence “Constructor is the only search and discovery platform designed exclusively for commerce where conversions matter.” Source: RevenueBase Database · checked Sep 5, 2026
24	ARTSY	Partial evidence	New York, United StatesHQ checked Sep 5, 2026	201-500	618 contacts →
	Partial evidence “The world’s largest online art marketplace.” Source: RevenueBase Database · checked Sep 5, 2026
25	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

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: 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 marketplace platforms.
Partial evidence: Its own public description names part of marketplace platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name 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 3,150 marketplace platforms based in the United States

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Marketplace platforms based in the United States at a glance

As of Sep 5, 2026

23.4%Verified-email coverage

23.1%Mobile-number coverage

34.2Average 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

1,692

11-50

1,035

51-200

264

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

23,3140–30

1,56031–60

2561–90

2090–180

229180+

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 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 “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 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 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, 25,148 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.

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 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 marketplace platforms are there based in the United States?

RevenueBase identified 3,150 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 marketplace platforms?

New York leads with 292 headquartered companies, followed by Los Angeles (133) and San Francisco (113).

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 25,148 verified decision-maker contacts tracked across these 3,150 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 5, 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.