Company lists · Data refreshed September 2026

Top 25 Marketplace software companies based in the United States

Name: Marketplace software companies 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 381 companies tracked

RevenueBase identified 381 marketplace software companies headquartered in the United States as of September 2026 and tracks 40,416 professional contacts across them, including 10,521 with verified work emails and 10,455 with mobile numbers. New York is the largest hub.

This list covers marketplace software companies 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

381Companies

40,416Contacts tracked

10,521Verified emails

10,455Mobile numbers

Unlock all 381 companies Free signup · no credit card · 500 free credits

The 25 largest marketplace software companies based in the United States

Ranked by team size

Top 25 of 381 marketplace software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names marketplace software companies: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	EBAYIndirect evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	10001+	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, 2026
2	ETSYPartial evidence	Brooklyn, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	6,680
	“Etsy is the global marketplace for unique and creative goods.” Source: company website · checked Sep 5, 2026
3	Walmart MarketplacePartial evidence	Bentonville, AR, United StatesHQ checked Sep 5, 2026	5,001-10,000	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, 2026
4	FlywheelPartial evidence	Baltimore, MD, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,706
	“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: company website · checked Sep 5, 2026
5	StockxIndirect evidence	Detroit, MI, United StatesHQ checked Sep 5, 2026	1,001-5,000	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, 2026
6	G2Partial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	501-1,000	959
	“G2 is the world’s largest and most trusted data source on B2B software, helping businesses reach their peak potential by enabling confident buying and go-to-market decisions.” Source: company website · checked Sep 5, 2026
7	Ebay For BusinessPartial evidence	San Jose, CA, United StatesHQ checked Sep 5, 2026	10001+	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, 2026
8	WHOPIndirect evidence	Brooklyn, NY, United StatesHQ checked Sep 5, 2026	51-200	309
	“Whop is a financial technology company on a mission to provide the world with sustainable income.” Source: company website · checked Sep 5, 2026
9	RevolutionpartsIndirect evidence	Tempe, AZ, United StatesHQ checked Sep 5, 2026	51-200	174
	“RevolutionParts, based in Phoenix, Arizona, accelerates parts and accessories sales across major automotive brands in North America.” Source: company website · checked Sep 5, 2026
10	Ecwid By LightspeedIndirect evidence	Encinitas, CA, United StatesHQ checked Sep 5, 2026	51-200	143
	“Have you thought that selling online was a little out of your reach?” Source: company website · checked Sep 5, 2026
11	SOLEOIndirect evidence	Rochester, NY, United StatesHQ checked Sep 5, 2026	51-200	98
	“For over 20 years, our mission has remained the same: make useful connections for people everywhere, every day.” Source: company website · checked Sep 5, 2026
12	X-CartIndirect evidence	Athens, GA, United StatesHQ checked Sep 5, 2026	51-200	69
	“Stand out from your competitors and get your customers’ attention with a digital presence designed to engage.” Source: company website · checked Sep 5, 2026
13	Efficient MarketsPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	65
	“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: company website · checked Sep 5, 2026
14	Playerauctions, INCIndirect evidence	West Los Angeles, CA, United StatesHQ checked Sep 5, 2026	51-200	65
	Source: company website · checked Sep 5, 2026
15	DasdakIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	n/a	61
	“Dasdak is a social commerce platform that helps businesses leverage modern technologies under one system.” Source: company website · checked Sep 5, 2026
16	Vendoo YC W22Indirect evidence	Silver Spring, MD, United StatesHQ checked Sep 5, 2026	11-50	52
	“Now introducing Vendoo Enterprise: Vendoo simplifies multichannel selling for larger reselling businesses.” Source: company website · checked Sep 5, 2026
17	channelmax.netStrong evidence	South Lyon, MI, United StatesHQ checked Sep 5, 2026	51-200	45
	“ChannelMAX is a marketplace software company built to support third-party sellers on Amazon and other leading marketplaces.” Source: company website · checked Sep 5, 2026
18	Acquisition NetworkPartial evidence	Scottsdale, AZ, United StatesHQ checked Sep 5, 2026	11-50	44
	“Welcome to Acquisition Network: The Social Marketplace for Buying and Selling Companies & Services.” Source: company website · checked Sep 5, 2026
19	FLYWLPartial evidence	San Francisco Bay, CA, United StatesHQ checked Sep 5, 2026	11-50	35
	“Flywl makes cloud marketplace procurement fast, simple, and secure.” Source: company website · checked Sep 5, 2026
20	WBM InternationalIndirect evidence	Flemington, NJ, United StatesHQ checked Sep 5, 2026	1,001-5,000	34
	“WBM International Online is known worldwide for its business operations and high standard quality products.” Source: company website · checked Sep 5, 2026
21	Broadleaf CommerceIndirect evidence	Plano, TX, United StatesHQ checked Sep 5, 2026	11-50	27
	“Broadleaf Commerce, LLC was founded in direct response to the emerging needs of online retailers.” Source: company website · checked Sep 5, 2026
22	Cs-CartPartial evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	51-200	26
	“We've been developing eCommerce software since 2005.” Source: company website · checked Sep 5, 2026
23	Machinery PartnerIndirect evidence	Boston, MA, United StatesHQ checked Sep 5, 2026	51-200	26
	“Machinery Partner helps buyers and sellers of heavy equipment to grow faster and easier with the technology and industry expertise to match their needs.” Source: company website · checked Sep 5, 2026
24	RejiggIndirect evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	11-50	24
	“At Rejigg, we are on a mission to simplify buying and selling small businesses.” Source: company website · checked Sep 5, 2026
25	DealmirrorIndirect evidence	Middletown, DE, United StatesHQ checked Sep 5, 2026	11-50	21
	“Founded in 2018 by Mr.” Source: company website · checked Sep 5, 2026

Showing 25 of 381 marketplace software companies based in the United States

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Marketplace software companies based in the United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

New YorkLargest hub · 29 HQs

10,455Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

184

11-50

141

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

9,765

31–60

649

61–90

90–180

180+

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 software companies, 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 “marketplace software companies”. 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 marketplace software companies, 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, 10,521 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 software companies by metro

Marketplace software companies in New York29

Frequently asked

How many marketplace software companies are there based in the United States?

RevenueBase identified 381 marketplace software companies 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 software companies?

New York leads with 29 headquartered companies, followed by Los Angeles (13) and Austin (9).

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 10,521 verified decision-maker contacts tracked across these 381 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 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.