Company lists · Data refreshed September 2026

Top 25 Business to business platforms based in the United States

Name: Business to business 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 27, 2026 1,234 companies tracked

RevenueBase identified 1,234 business to business platforms headquartered in the United States as of September 2026 and tracks 44,707 professional contacts across them, including 12,438 with verified work emails. New York is the largest hub.

This list covers business to business 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 27, 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 27, 2026 86% judged on-target in blind review

1,234Companies

44,707Contacts tracked

12,438Verified emails

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The 25 largest business to business platforms based in the United States

Ranked by team size

Top 25 of 1,234 business to business platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to business to business 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 27, 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 27, 2026
2	Walmart Marketplace	Indirect evidence	Bentonville, AR, United StatesHQ checked Sep 27, 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 27, 2026
3	Pax8	Strong evidence	Greenwood Village, CO, United StatesHQ checked Sep 27, 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 27, 2026
4	Appdirect	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 27, 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 27, 2026
5	Bigcommerce	Strong evidence	Austin, TX, United StatesHQ checked Sep 27, 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 27, 2026
6	Ebay For Business	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 27, 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 27, 2026
7	Unilog	Strong evidence	Plymouth Meeting, PA, United StatesHQ checked Sep 27, 2026	501-1,000	689 contacts →
	Strong 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 27, 2026
8	ODP Business Solutions	Indirect evidence	Boca Raton, FL, United StatesHQ checked Sep 27, 2026	501-1,000	687 contacts →
	Indirect evidence “ODP Business Solutions, an operating company of The ODP Group, is a leading B2B provider of workplace and technology solutions, combining an extensive range of products and…” Source: RevenueBase Database · checked Sep 27, 2026
9	Thomas	Indirect evidence	New York, United StatesHQ checked Sep 27, 2026	201-500	380 contacts →
	Indirect evidence “We help B2B buyers and industrial suppliers grow their businesses and their careers.” Source: RevenueBase Database · checked Sep 27, 2026
10	Kensium	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 27, 2026	201-500	343 contacts →
	Indirect 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 27, 2026
11	1105 Media	Indirect evidence	Woodland Hills, CA, United StatesHQ checked Sep 27, 2026	51-200	278 contacts →
	Indirect evidence “1105 Media, Inc, is a leading business-to-business (B2B) services provider whose sole mission is to help our customers grow their business.” Source: RevenueBase Database · checked Sep 27, 2026
12	B-Stock	Strong evidence	San Mateo, CA, United StatesHQ checked Sep 27, 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 27, 2026
13	MFG	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	n/a	230 contacts →
	Indirect evidence “MFG helps manufacturers grow their business by making it easy for them to be discovered by high quality customers, while also making it easy for buyers to find manufacturing…” Source: RevenueBase Database · checked Sep 27, 2026
14	Sterling Commerce An At&t Company	Indirect evidence	Dublin, OH, United StatesHQ checked Sep 27, 2026	1,001-5,000	213 contacts →
	Indirect evidence “DATELINE: August 27, 2010 - Sterling Commerce purchased from AT & T by IBM for $1.4B.” Source: RevenueBase Database · checked Sep 27, 2026
15	The ODP Corporation	Strong evidence	Boca Raton, FL, United StatesHQ checked Sep 27, 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 27, 2026
16	JOOR	Indirect evidence	New York, NY, United StatesHQ checked Sep 27, 2026	51-200	199 contacts →
	Indirect evidence “Backed by Macquarie Group, Battery Ventures, Canaan Partners & ITOCHU, JOOR is a Series D start-up that provides the world's most recognized brands and retailers with a digital…” Source: RevenueBase Database · checked Sep 27, 2026
17	tradewheel.com	Indirect evidence	Wilmington, DE, United StatesHQ checked Sep 27, 2026	201-500	199 contacts →
	Indirect evidence “Tradewheel.com is the most prominent B2B marketplace for global traders to meet and come together to strengthen cross border trading.” Source: RevenueBase Database · checked Sep 27, 2026
18	Clutch	Indirect evidence	Washington, DC, United StatesHQ checked Sep 27, 2026	51-200	182 contacts →
	Indirect evidence “Clutch powers how businesses discover, evaluate, and hire the right B2B service partners.” Source: RevenueBase Database · checked Sep 27, 2026
19	Ecwid By Lightspeed	Indirect evidence	Encinitas, CA, United StatesHQ checked Sep 27, 2026	51-200	143 contacts →
	Indirect evidence “Have you thought that selling online was a little out of your reach?” Source: RevenueBase Database · checked Sep 27, 2026
20	Miva, INC	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 27, 2026	51-200	140 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
21	Nuorder By Lightspeed	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 27, 2026	51-200	138 contacts →
	Strong evidence “NuORDER by Lightspeed is a leading B2B platform powering commerce and discovery for the world's best brands and retailers.” Source: RevenueBase Database · checked Sep 27, 2026
22	WEX Brasil Tech	Indirect evidence	Portland, ME, United StatesHQ checked Sep 27, 2026	5,001-10,000	137 contacts →
	Indirect evidence “WEX é a plataforma de comércio global que simplifica o negócio de administrar um negócio.” Source: RevenueBase Database · checked Sep 27, 2026
23	Ecentria	Indirect evidence	Northbrook, IL, United StatesHQ checked Sep 27, 2026	501-1,000	135 contacts →
	Indirect evidence “Thousands of brands.” Source: RevenueBase Database · checked Sep 27, 2026
24	Financialforce	Strong evidence	San Jose, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	118 contacts →
	Strong evidence “On May 3, 2023, FinancialForce became Certinia: the platform for services business.” Source: RevenueBase Database · checked Sep 27, 2026
25	Orocommerce	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 27, 2026	51-200	114 contacts →
	Indirect evidence “OroCommerce, created by Oro Inc, is the gold standard in B2B eCommerce.” Source: RevenueBase Database · checked Sep 27, 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: business to business 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 business to business platforms.
Partial evidence: Its own public description names part of business to business platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business to business 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 1,234 business to business platforms based in the United States

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Business to business platforms based in the United States at a glance

As of Sep 27, 2026

27.8%Verified-email coverage

36.2Average contacts per company

11-50Median size (employees)

7.7%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

600

11-50

446

51-200

125

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 1,234 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 business to business 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 “business to business 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 business to business 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 business to business 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, 12,438 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 27, 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.

Business to business 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 business to business 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 business to business platforms are there based in the United States?

RevenueBase identified 1,234 business to business 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 business to business platforms?

New York leads with 95 headquartered companies, followed by San Francisco (38) and Los Angeles (35).

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 12,438 verified decision-maker contacts tracked across these 1,234 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 27, 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.