Company lists · Data refreshed September 2026

Top 25 B2B platform ecommerce companies based in the United States

Name: B2B platform ecommerce 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 21, 2026 1,332 companies tracked

RevenueBase identified 1,332 B2B platform ecommerce companies headquartered in the United States as of September 2026 and tracks 36,227 professional contacts across them, including 7,657 with verified work emails. New York is the largest hub.

This list covers B2B platform ecommerce 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 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 21, 2026 86% judged on-target in blind review

1,332Companies

36,227Contacts tracked

7,657Verified emails

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The 25 largest B2B platform ecommerce companies based in the United States

Ranked by team size

Top 25 of 1,332 B2B platform ecommerce companies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to B2B platform ecommerce companies: 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	Walmart Marketplace	Indirect evidence	Bentonville, AR, United StatesHQ checked Sep 21, 2026	5,001-10,000	4,007 contacts →
	Indirect 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 21, 2026
2	Amazon	Strong evidence	Seattle, WA, United StatesHQ checked Sep 21, 2026	10001+	3,849 contacts →
	Strong 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 21, 2026
3	TEMU	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 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 21, 2026
4	Flywheel	Indirect evidence	Baltimore, MD, United StatesHQ checked Sep 21, 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 21, 2026
5	Newegg	Indirect evidence	Diamond Bar, CA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,107 contacts →
	Indirect evidence “Newegg Commerce, Inc.(NASDAQ: NEGG) is a leading global e-commerce retailer founded in 2001 and headquartered in Diamond Bar, California.” Source: RevenueBase Database · checked Sep 21, 2026
6	Iksula	Partial evidence	Oakland, CA, United StatesHQ checked Sep 21, 2026	501-1,000	948 contacts →
	Partial evidence “Iksula is a leading eCommerce solutions provider for brands and retailers globally.” Source: RevenueBase Database · checked Sep 21, 2026
7	Appdirect	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	501-1,000	924 contacts →
	Strong 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 21, 2026
8	Liquidity Services	Strong evidence	Bethesda, MD, United StatesHQ checked Sep 21, 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 21, 2026
9	Bigcommerce	Strong evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	746 contacts →
	Strong evidence “BigCommerce, powered by Commerce (Nasdaq: CMRC), is the flexible enterprise ecommerce platform built for growth without compromise.” Source: RevenueBase Database · checked Sep 21, 2026
10	Ebay For Business	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	10001+	744 contacts →
	Indirect 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 21, 2026
11	Unilog	Partial evidence	Plymouth Meeting, PA, United StatesHQ checked Sep 21, 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 21, 2026
12	cart.com	Partial evidence	Houston, TX, United StatesHQ checked Sep 21, 2026	1,001-5,000	660 contacts →
	Partial evidence “Cart.com is the leading provider of unified commerce and logistics solutions that enable B2C and B2B companies to master omnichannel commerce, from product discovery to order…” Source: RevenueBase Database · checked Sep 21, 2026
13	SDI	Indirect evidence	Bristol, PA, United StatesHQ checked Sep 21, 2026	501-1,000	627 contacts →
	Indirect evidence “SDI – The Digital Supply Chain Company Procurement.” Source: RevenueBase Database · checked Sep 21, 2026
14	Vserve Ebusiness Solutions	Partial evidence	New York, United StatesHQ checked Sep 21, 2026	501-1,000	481 contacts →
	Partial evidence “Vserve Ebusiness Solutions is a Trusted Global Provider of AI-powered Supply Chain and Ecommerce Solutions.” Source: RevenueBase Database · checked Sep 21, 2026
15	Amla Commerce Creator Of Artifi And Znode	Strong evidence	Milwaukee, WI, United StatesHQ checked Sep 21, 2026	201-500	408 contacts →
	Strong evidence “Amla Commerce develops ecommerce software platforms.” Source: RevenueBase Database · checked Sep 21, 2026
16	Infosys Equinox	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	501-1,000	354 contacts →
	Partial evidence “Infosys Equinox is a digital commerce platform that drives human-centric and memorable omnichannel shopping experiences.” Source: RevenueBase Database · checked Sep 21, 2026
17	Kensium	Strong evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	201-500	343 contacts →
	Strong evidence “At Kensium, we lead the way in B2B and B2C eCommerce innovation, delivering scalable solutions that drive business growth and competitiveness.” Source: RevenueBase Database · checked Sep 21, 2026
18	Bonanza	Indirect evidence	Seattl, United StatesHQ checked Sep 21, 2026	n/a	313 contacts →
	Indirect 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 21, 2026
19	HERO	Partial evidence	NY, United StatesHQ checked Sep 21, 2026	51-200	300 contacts →
	Partial evidence “The #1 virtual shopping platform.” Source: RevenueBase Database · checked Sep 21, 2026
20	Cin7	Indirect evidence	Denver, CO, United StatesHQ checked Sep 21, 2026	201-500	298 contacts →
	Indirect evidence “Cin7 helps growing product businesses manage less and sell more by simplifying complex manufacturing, retail, and wholesale operations.” Source: RevenueBase Database · checked Sep 21, 2026
21	B-Stock	Strong evidence	San Mateo, CA, United StatesHQ checked Sep 21, 2026	201-500	233 contacts →
	Strong evidence “B-Stock is the world's largest B2B recommerce platform and system of record for all resale.” Source: RevenueBase Database · checked Sep 21, 2026
22	Channeladvisor	Partial evidence	Morrisville, NC, United StatesHQ checked Sep 21, 2026	501-1,000	225 contacts →
	Partial evidence “ChannelAdvisor (NYSE: ECOM) is a leading multichannel commerce platform whose mission is to connect and optimize the world’s commerce.” Source: RevenueBase Database · checked Sep 21, 2026
23	KIBO	Partial evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	201-500	211 contacts →
	Partial evidence “KIBO Commerce is a composable digital commerce platform for retailers, manufacturers, distributors, and wholesalers who want to simplify the complexity in their businesses and…” Source: RevenueBase Database · checked Sep 21, 2026
24	The ODP Corporation	Strong evidence	Boca Raton, FL, United StatesHQ checked Sep 21, 2026	10001+	211 contacts →
	Strong evidence “The ODP Corporation (NASDAQ:ODP) is a leading provider of products and services through an integrated business-to-business (B2B) distribution platform and omnichannel presence…” Source: RevenueBase Database · checked Sep 21, 2026
25	Wizcommerce	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	209 contacts →
	Partial evidence “WizCommerce is the AI Commerce Platform for Modernizing Wholesale Sales & Operations.” Source: RevenueBase Database · checked Sep 21, 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: B2B platform ecommerce companies. 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 B2B platform ecommerce companies.
Partial evidence: Its own public description names part of B2B platform ecommerce companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name B2B platform ecommerce companies. 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 1,332 B2B platform ecommerce companies based in the United States

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B2B platform ecommerce companies based in the United States at a glance

As of Sep 21, 2026

21.1%Verified-email coverage

27.2Average contacts per company

11-50Median size (employees)

8.1%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

558

11-50

531

51-200

154

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,332 companies.

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 B2B platform ecommerce companies, 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 “B2B platform ecommerce companies”. 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 B2B platform ecommerce companies), 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 B2B platform ecommerce 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 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, 7,657 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 21, 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.

B2B platform ecommerce companies by metro

B2B platform ecommerce companies in New York108
B2B platform ecommerce companies in Los Angeles36
B2B platform ecommerce companies in San Francisco34
B2B platform ecommerce companies in Miami30
B2B platform ecommerce companies in Austin29
B2B platform ecommerce companies in Sheridan25

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 B2B platform ecommerce companies, 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 B2B platform ecommerce companies are there based in the United States?

RevenueBase identified 1,332 B2B platform ecommerce 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?

Walmart Marketplace, headquartered in Bentonville, tops this list with the largest team on record.

Which city has the most B2B platform ecommerce companies?

New York leads with 108 headquartered companies, followed by Los Angeles (36) and San Francisco (34).

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 7,657 verified decision-maker contacts tracked across these 1,332 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 21, 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.