Company lists · Data refreshed September 2026

Top 25 Marketplace aggregation platforms based in the United States

Name: Marketplace aggregation 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 28, 2026 205 companies tracked

RevenueBase identified 205 marketplace aggregation platforms headquartered in the United States as of September 2026 and tracks 3,610 professional contacts across them, including 1,336 with verified work emails. New York is the largest hub.

This list covers marketplace aggregation 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 28, 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 28, 2026 86% judged on-target in blind review

205Companies

3,610Contacts tracked

1,336Verified emails

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The 25 largest marketplace aggregation platforms based in the United States

Ranked by team size

Top 25 of 205 marketplace aggregation platforms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to marketplace aggregation 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	Quinstreet	Partial evidence	Foster City, CA, United StatesHQ checked Sep 28, 2026	501-1,000	1,035 contacts →
	Partial evidence “Powering Performance Marketplaces In Digital Media QuinStreet is a pioneer in powering decentralized online marketplaces that match searchers and “research and compare” consumers…” Source: RevenueBase Database · checked Sep 28, 2026
2	Allconnect	Strong evidence	Fort Mill, SC, United StatesHQ checked Sep 28, 2026	501-1,000	324 contacts →
	Strong evidence “Allconnect is a digital marketplace and customer acquisition platform that connects consumers to essential home services, including internet, TV, utilities, and other home…” Source: RevenueBase Database · checked Sep 28, 2026
3	Flyguys	Partial evidence	Lafayette, LA, United StatesHQ checked Sep 28, 2026	11-50	99 contacts →
	Partial evidence “FlyGuys is the online marketplace for reality data capture.” Source: RevenueBase Database · checked Sep 28, 2026
4	SOLEO	Indirect evidence	Rochester, NY, United StatesHQ checked Sep 28, 2026	51-200	98 contacts →
	Indirect evidence “For over 20 years, our mission has remained the same: make useful connections for people everywhere, every day.” Source: RevenueBase Database · checked Sep 28, 2026
5	Intentwise	Strong evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	51-200	86 contacts →
	Strong evidence “Intentwise is the Commerce Observability Platform for marketplaces.” Source: RevenueBase Database · checked Sep 28, 2026
6	Doba INC	Partial evidence	Lehi, UT, United StatesHQ checked Sep 28, 2026	51-200	67 contacts →
	Partial evidence “Doba is a commerce platform serving suppliers and buyers.” Source: RevenueBase Database · checked Sep 28, 2026
7	Efficient Markets	Partial evidence	Houston, TX, United StatesHQ checked Sep 28, 2026	11-50	65 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 28, 2026
8	Shopsimon	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 28, 2026	201-500	54 contacts →
	Indirect evidence “ShopSimon offers a comprehensive single source of premium and luxury sale-priced products from more than 360 retailers.” Source: RevenueBase Database · checked Sep 28, 2026
9	SAN Francisco Compute Company	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	44 contacts →
	Indirect evidence “San Francisco Compute is a vertically integrated supercomputing company.” Source: RevenueBase Database · checked Sep 28, 2026
10	Massgenie	Partial evidence	Irvine, CA, United StatesHQ checked Sep 28, 2026	51-200	36 contacts →
	Partial evidence “MassGenie is a marketplace specifically designed and curated for people who want a fun, memorable shopping experience.” Source: RevenueBase Database · checked Sep 28, 2026
11	FLYWL	Partial evidence	San Francisco Bay, CA, United StatesHQ checked Sep 28, 2026	11-50	35 contacts →
	Partial evidence “Flywl makes cloud marketplace procurement fast, simple, and secure.” Source: RevenueBase Database · checked Sep 28, 2026
12	Cs-Cart	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 28, 2026	51-200	26 contacts →
	Indirect evidence “We've been developing eCommerce software since 2005.” Source: RevenueBase Database · checked Sep 28, 2026
13	Godatafeed	Indirect evidence	Plantation, FL, United StatesHQ checked Sep 28, 2026	11-50	23 contacts →
	Indirect evidence “GoDataFeed helps online retailers get their products everywhere by syndicating their product listings to a choice of over 100 shopping engines including Google Shopping, Facebook…” Source: RevenueBase Database · checked Sep 28, 2026
14	Mamenta	Partial evidence	Littleton, CO, United StatesHQ checked Sep 28, 2026	11-50	22 contacts →
	Partial evidence “Mamenta seamlessly connects brand data and inventory positions into Global Marketplaces expanding revenue, accelerating access to new markets, and maximizing profits.” Source: RevenueBase Database · checked Sep 28, 2026
15	LEW & Dowski Capital, LLC	Indirect evidence	Cambridge, MA, United StatesHQ checked Sep 28, 2026	1-10	20 contacts →
	Indirect evidence “Lew & Dowski Capital LLC is a B2B business that uses proprietary data scraping, supply and demand algorithms, and specialized in-house automation software to broker ecommerce…” Source: RevenueBase Database · checked Sep 28, 2026
16	Mediabrains	Strong evidence	Naples, FL, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Strong evidence “Millions of professionals trust the MediaBrains business-to-business marketplace platform to simplify complex purchase decisions.” Source: RevenueBase Database · checked Sep 28, 2026
17	Near ME Marketplaces	Partial evidence	Burlingame, CA, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Near Me is a peer-to-peer and B2B multi-vendor ecommerce solution enabling anyone to setup their own branded marketplace.” Source: RevenueBase Database · checked Sep 28, 2026
18	Nachonacho	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 28, 2026	11-50	14 contacts →
	Partial evidence “NachoNacho is a Marketplace for SaaS/AI & Services: For Businesses (Buyers):(a) SaaS Marketplace: get massive discounts (up to 30% lifetime) on ~900 major SaaS products.$5.6…” Source: RevenueBase Database · checked Sep 28, 2026
19	Bulk Exchange	Indirect evidence	San Rafael, CA, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “We make it fast and easy to find, source, and move bulk materials without the chasing, phone tag, or guesswork.” Source: RevenueBase Database · checked Sep 28, 2026
20	Channelsale Software Services INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “Since year 2007, ChannelSale has been providing cutting edge powerful software solutions & expert services enabling online sellers to reach more customers globally across 200+…” Source: RevenueBase Database · checked Sep 28, 2026
21	Merchantadvantage, LLC	Indirect evidence	Bay Harbor Islands, FL, United StatesHQ checked Sep 28, 2026	11-50	13 contacts →
	Indirect evidence “The MerchantAdvantage Suite of Tools, including Channel Management, KeywordControl & Google Shopping Campaigns Module, empowers Merchants to sell more products more efficiently by…” Source: RevenueBase Database · checked Sep 28, 2026
22	Franchise Ventures	Indirect evidence	Norfolk, VA, United StatesHQ checked Sep 28, 2026	11-50	12 contacts →
	Indirect evidence “Franchise Ventures is a lot more than the largest source of franchisee candidates.” Source: RevenueBase Database · checked Sep 28, 2026
23	Partner Fleet	Indirect evidence	Chicago, United StatesHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “Partner Fleet is the operating layer for your integration ecosystem.” Source: RevenueBase Database · checked Sep 28, 2026
24	Corexpand	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “For 20 years, Corexpand has been the leader in powerful, client-specific B2B marketplace solutions.” Source: RevenueBase Database · checked Sep 28, 2026
25	Advertising Marketplace	Indirect evidence	Costa Mesa, CA, United StatesHQ checked Sep 28, 2026	1-10	12 contacts →
	Indirect evidence “We Make Advertising Easy!” Source: RevenueBase Database · checked Sep 28, 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: marketplace aggregation 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 marketplace aggregation platforms.
Partial evidence: Its own public description names part of marketplace aggregation platforms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marketplace aggregation 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 205 marketplace aggregation platforms based in the United States

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Marketplace aggregation platforms based in the United States at a glance

As of Sep 28, 2026

37.0%Verified-email coverage

17.6Average contacts per company

11-50Median size (employees)

10.2%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 205 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 marketplace aggregation 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 “marketplace aggregation 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 marketplace aggregation 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 marketplace aggregation 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, 1,336 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 28, 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.

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 marketplace aggregation 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 marketplace aggregation platforms are there based in the United States?

RevenueBase identified 205 marketplace aggregation 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?

Quinstreet, headquartered in Foster City, tops this list with the largest team on record.

Which city has the most marketplace aggregation platforms?

New York leads with 21 headquartered companies, followed by Los Angeles (10) and San Francisco (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 1,336 verified decision-maker contacts tracked across these 205 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 28, 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.