Company lists · Data refreshed September 2026
Top 25 Platform company builders based in the United States
RevenueBase identified 1,265 platform company builders headquartered in the United States as of September 2026 and tracks 23,487 professional contacts across them, including 3,842 with verified work emails. New York is the largest hub.
This list covers platform company builders 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 29, 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.
The 25 largest platform company builders based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,283 contacts → | ||||
Indirect evidence “Y Combinator is the leading startup accelerator for entrepreneurs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,166 contacts → | ||||
Indirect evidence “Red Ventures is a global portfolio of high-growth companies, and a place where ambitious people come to build, grow, and scale businesses.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,803 contacts → | ||||
Indirect evidence “Techstars helps founders scale their startups into world-changing businesses.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,533 contacts → | ||||
Indirect evidence “Microsoft for Startups is a digital ecosystem removing barriers to building a company with free access to technology, coaching, and support for founders in any stage of…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,480 contacts → | ||||
Indirect evidence “Company is a curated collection of startups, entrepreneurs, and enterprises working towards the realization of impactful ideas, together.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,289 contacts → | ||||
Indirect evidence “Endeavor is the leading global network of, by, and for high-impact entrepreneurs innovating Elsewhere.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 483 contacts → | ||||
Indirect evidence “Startup Grind is the leading global startup community dedicated to fostering the growth of early-stage companies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 315 contacts → | ||||
Indirect evidence “Headquartered in the United States with eight locations worldwide, MassChallenge exist because the future depends on radically reimagining support for those with the grit to solve…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 279 contacts → | ||||
Indirect evidence “Based in Lexington, Kentucky, Awesome Inc: 🤝 Grows community through events, education, and entrepreneurship Throws the largest pitch competition in the region, 5 Across Helps…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 274 contacts → | ||||
Indirect evidence “The Global Entrepreneurship Network operates projects and programs in 200 countries aimed at making it easier for anyone, anywhere to start and scale a business.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 258 contacts → | ||||
Indirect evidence “Our mission is to help more people start better startups.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 231 contacts → | ||||
Indirect evidence “Bridge for Billions is a global social enterprise on a mission to build more inclusive and sustainable economies through early-stage entrepreneurship.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 229 contacts → | ||||
Indirect evidence “F6S helps millions of founders and their companies grow.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 180 contacts → | ||||
Indirect evidence “gener8tor fosters innovation ecosystems through its accelerator programs, venture funds, and skills-based workforce initiatives.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 166 contacts → | ||||
Indirect evidence “We believe that innovation can change the world for good, and we’re providing the tools that empower innovators & entrepreneurs to bring their ideas to life.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 122 contacts → | ||||
Indirect evidence “Our mission is to drive economic vitality by connecting entrepreneurs to the opportunities and resources they need to succeed.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 121 contacts → | ||||
Partial evidence “Blackbox is a global founder-focused platform.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 119 contacts → | ||||
Partial evidence “Newlab is a venture platform for critical technology startups transforming core industrial sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 116 contacts → | ||||
Indirect evidence “sq.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 103 contacts → | ||||
Indirect evidence “The Nasdaq Center is an invaluable and prestigious resource for founders and leaders worldwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 98 contacts → | ||||
Indirect evidence “Helping make Nashville the best place to start and grow a business by increasing the likelihood of success for entrepreneurs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 89 contacts → | ||||
Indirect evidence “In 2019, we started building profitable startups from scratch.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 86 contacts → | ||||
Indirect evidence “TEDCO enhances economic empowerment growth through the fostering of an inclusive entrepreneurial innovation ecosystem.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 82 contacts → | ||||
Indirect evidence “Renaissance Entrepreneurship Center transforms lives and communities through entrepreneurship.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 80 contacts → | ||||
Indirect evidence “Founded by Jason Calacanis.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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: platform company builders. 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 platform company builders.
- Partial evidence
- Its own public description names part of platform company builders, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name platform company builders. 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 1,265 platform company builders based in the United States
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Platform company builders based in the United States at a glance
As of Sep 29, 2026Companies by employee count
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 1,265 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 platform company builders, 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 “platform company builders”. 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 platform company builders), 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 platform company builders, 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, 3,842 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 29, 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.
Platform company builders 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 platform company builders, 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 platform company builders are there based in the United States?
RevenueBase identified 1,265 platform company builders 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?
Y Combinator, headquartered in San Francisco, tops this list with the largest team on record.
Which city has the most platform company builders?
New York leads with 75 headquartered companies, followed by San Francisco (74) and Los Angeles (40).
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 3,842 verified decision-maker contacts tracked across these 1,265 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 29, 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.
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