Company lists · Data refreshed September 2026
Top 25 Online marketplace platforms based in the United States
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, how directly it supports the match, 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 SmartSearch, 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.
The 25 largest online marketplace platforms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 20,791 | ||||
“At eBay, we create pathways to connect millions of sellers and buyers in more than 190 markets around the world.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 6,680 | ||||
“Etsy is the global marketplace for unique and creative goods.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | Walmart MarketplacePartial evidence | 4,007 | |||
“Walmart Marketplace connects you to millions of customers across categories, with the tools, insights, and support to grow with confidence.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 3,849 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 3,516 | ||||
“We're Hiring!” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | World MarketPartial evidence | 3,298 | |||
“We delight customers with an ever-changing marketplace of unique and beautiful home furnishings, décor, accessories and exceptional gourmet products.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,462 | ||||
“The RealReal is the world’s largest online marketplace for authenticated, resale luxury goods.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,427 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,491 | ||||
“Ebix operates AI-driven, API-first digital marketplaces that power commerce across multiple industries worldwide.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | WhatnotPartial evidence | 1,378 | |||
“Whatnot is the largest livestream shopping platform in the US, UK, and Europe.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | StockxIndirect evidence | 1,261 | |||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,035 | ||||
“Powering Performance Marketplaces In Digital Media QuinStreet is a pioneer in powering decentralized online marketplaces that match searchers and “research and compare” consumers…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 836 | ||||
“Our mission is to propel brands to increase their ecommerce market share across the globe while improving their operational costs.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | ZazzlePartial evidence | 828 | |||
“Zazzle is a marketplace of custom products created by designers selling their art and makers showcasing their customizable products.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 744 | ||||
“eBay is one of the world’s largest online marketplaces, connecting people with the things they need and love virtually anytime, anywhere.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 618 | ||||
“The world’s largest online art marketplace.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | RUE Gilt GroupeIndirect evidence | 607 | |||
“Rue Gilt Groupe is a leading off-price e-commerce portfolio company, connecting the next-generation shopper to world-class brands.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 591 | ||||
“Mercari launched in 2013 in Japan, and has since become the largest mobile marketplace in the Japanese market.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 575 | ||||
“Trader Interactive is the leading provider of online market places and digital marketing products serving the lifestyle vehicles and commercial equipment segments.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 378 | ||||
“Everything But The House (EBTH) is a premier online auction marketplace offering a seamless, fully authenticated experience for buying and selling secondhand goods.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 348 | ||||
“OfferUp is on a mission to unleash the power of local.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 324 | ||||
“Allconnect is a digital marketplace and customer acquisition platform that connects consumers to essential home services, including internet, TV, utilities, and other home…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 313 | ||||
“Bonanza.com is a fast-growing online marketplace of over 15 million items where sellers offer everything from Isometric sunglasses to Bieber perfume.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 309 | ||||
“Whop is a financial technology company on a mission to provide the world with sustainable income.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 300 | ||||
“The #1 virtual shopping platform.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 1,412 online marketplace platforms based in the United States
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Online marketplace platforms based in the United States at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 evidence 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 SmartSearch, 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.
- 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 an evidence 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
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.
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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 SmartSearch, 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.
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