Company lists · Data refreshed September 2026

Top 25 Marketplace platform developers based in the United States

Name: Marketplace platform developers 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 624 companies tracked

RevenueBase identified 624 marketplace platform developers headquartered in the United States as of September 2026 and tracks 43,472 professional contacts across them, including 10,733 with verified work emails and 10,768 with mobile numbers. New York is the largest hub.

This list covers marketplace platform developers 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

624Companies

43,472Contacts tracked

10,733Verified emails

10,768Mobile numbers

Unlock all 624 companies Free signup · no credit card · 500 free credits

The 25 largest marketplace platform developers based in the United States

Ranked by team size

Top 25 of 624 marketplace platform developers 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 platform developers: 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	FlywheelIndirect 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	BigcommercePartial evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	746
	“BigCommerce, powered by Commerce (Nasdaq: CMRC), is the flexible enterprise ecommerce platform built for growth without compromise.” Source: company website · checked Sep 5, 2026
6	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
7	JVZOOIndirect evidence	Oviedo, FL, United StatesHQ checked Sep 5, 2026	n/a	453
	“Named one of the Inc.” Source: company website · checked Sep 5, 2026
8	BonanzaPartial evidence	Seattl, United StatesHQ checked Sep 5, 2026	n/a	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, 2026
9	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
10	HEROPartial evidence	NY, United StatesHQ checked Sep 5, 2026	51-200	300
	“The #1 virtual shopping platform.” Source: company website · checked Sep 5, 2026
11	EasyecomIndirect evidence	Atlanta, GA, United StatesHQ checked Sep 5, 2026	51-200	182
	“Enabling small scale merchants, manufacturers, retailers to sell their products online.” Source: company website · checked Sep 5, 2026
12	Helium 10Strong evidence	Irvine, CA, United StatesHQ checked Sep 5, 2026	51-200	178
	“Helium 10 is an all-in-one e-commerce platform that helps brands launch, grow, and scale across major marketplaces.” Source: company website · checked Sep 5, 2026
13	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
14	FastspringIndirect evidence	Santa Barbara, CA, United StatesHQ checked Sep 5, 2026	51-200	159
	“FastSpring is how SaaS, software, and digital product companies sell online in more places around the world.” Source: company website · checked Sep 5, 2026
15	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
16	Miva, INCIndirect evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	51-200	140
	Source: company website · checked Sep 5, 2026
17	ParafinStrong evidence	San Francisco, CA, United StatesHQ checked Sep 5, 2026	51-200	134
	“Parafin’s infrastructure powers financial services for marketplaces, vertical SaaS, payment platforms, and more.” Source: company website · checked Sep 5, 2026
18	CommercehubIndirect evidence	Latham, NY, United StatesHQ checked Sep 5, 2026	201-500	134
	“CommerceHub is one of the world’s largest, most trusted commerce networks, connecting over retailers and brands globally to transact more than $50 billion in gross merchandise…” Source: company website · checked Sep 5, 2026
19	RariblePartial evidence	New York, United StatesHQ checked Sep 5, 2026	11-50	119
	“Rarible offers the leading infrastructure for onchain marketplaces and collectible experiences with ~500 million dollars in GMV.” Source: company website · checked Sep 5, 2026
20	VolusionIndirect evidence	Austin, TX, United StatesHQ checked Sep 5, 2026	51-200	115
	“Volusion is an all-in-one ecommerce solution that helps entrepreneurs build and manage successful online businesses.” Source: company website · checked Sep 5, 2026
21	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
22	1stmilePartial evidence	Redmond, WA, United StatesHQ checked Sep 5, 2026	51-200	97
	“1stMILE (formerly Merchant Partners) is a software technology company based in Redmond that provides a consumer driven commerce platform to businesses in the automotive…” Source: company website · checked Sep 5, 2026
23	Shopkeep, A Lightspeed CompanyPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	91
	“Powering the businesses that are the backbone of the global economy, Lightspeed’s one-stop commerce platform helps merchants innovate to simplify, scale and provide exceptional…” Source: company website · checked Sep 5, 2026
24	SellersfiIndirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	78
	“Financial solutions built for e-commerce.” Source: company website · checked Sep 5, 2026
25	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

Showing 25 of 624 marketplace platform developers based in the United States

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Marketplace platform developers based in the United States at a glance

As of Sep 5, 2026

11-50Median size (employees)

New YorkLargest hub · 58 HQs

10,768Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

268

11-50

259

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Verified emails by last verification

0–30

9,945

31–60

672

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 platform developers, 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 platform developers”. 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 platform developers, 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, 10,733 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 platform developers by metro

Marketplace platform developers in New York58

Frequently asked

How many marketplace platform developers are there based in the United States?

RevenueBase identified 624 marketplace platform developers 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 platform developers?

New York leads with 58 headquartered companies, followed by San Francisco (17) and Los Angeles (15).

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 10,733 verified decision-maker contacts tracked across these 624 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.