Company lists · Data refreshed September 2026

Top 25 Funded tech startups based in Boston, United States

Name: Funded tech startups based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 181 companies tracked

RevenueBase identified 181 company matches for funded tech startups associated with Boston, United States as of September 2026 and tracks 2,525 professional contacts across them, including 1,034 with verified work emails. Across the United States, New York is the largest hub for this category (807 companies); Boston has 181.

This list covers company matches for funded tech startups associated with Boston, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built

181Companies

2,525Contacts tracked

1,034Verified emails

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The 25 largest funded tech startups based in Boston, United States

Ranked by team size

Top 25 of 181 company matches for funded tech startups based in Boston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	RA Capital Management	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	201-500	251 contacts →
	Exact match “Founded in 2004, RA Capital Management is an active, multi-stage investment manager dedicated to evidence-based, science-led investing in public and private healthcare, life…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Battery Ventures	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	211 contacts →
	Exact match “Battery invests in potentially cutting-edge, category-defining businesses in markets including application software, IT infrastructure technologies, consumer-internet and mobile…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Third Rock Ventures	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	113 contacts →
	Exact match “We discover, launch and build great companies based on bold ideas that meet at the intersection of science, strategy, business and medicine – where transformational science meets…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	FA Technology Ventures	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	n/a	109 contacts →
	Exact match “FA Technology Ventures is an independent, established venture capital firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Underscore VC	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	75 contacts →
	Exact match “Underscore VC is a Boston-based venture capital firm backing bold B2B software entrepreneurs at pre-Seed and Seed.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Silversmith Capital Partners	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	51-200	63 contacts →
	Exact match “Founded in 2015, Silversmith Capital Partners is a Boston-based growth equity firm with over $5 billion in capital under management.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Optum Ventures	Exact match	Boston, United StatesHQ recorded Sep 20, 2026	11-50	60 contacts →
	Exact match “At Optum Ventures, we look for exceptional teams with data-driven technologies and services that are poised to deeply disrupt the status quo.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Polaris Partners	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	55 contacts →
	Exact match “Exceptional entrepreneurs.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Clean Energy Ventures	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	54 contacts →
	Exact match “Clean Energy Ventures is a venture capital firm focused on investing in companies commercializing disruptive advanced energy technologies and business model innovations that can…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Openview	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	47 contacts →
	Exact match “OpenView is a venture capital firm on a mission to change the way the world works.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	Glasswing Ventures	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	45 contacts →
	Exact match “Glasswing Ventures is an early stage venture capital firm investing in the next generation of AI and frontier technology startups that are enabling the rise of the intelligent…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Companyon Ventures	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	n/a	41 contacts →
	Exact match “We back just a few fast-moving, founder-led B2B startups each year.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Pillar VC	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	40 contacts →
	Exact match “Pillar VC is with you from the beginning.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	M33 Growth	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	38 contacts →
	Exact match “M33 Growth is a venture and growth stage investment firm that seeks to partner with founders and CEOs to rapidly scale their companies and break through as industry leaders.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	PJC	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	n/a	38 contacts →
	Exact match “PJC is an early-stage venture capital firm focused on investing in, supporting, and building relationships with entrepreneurs who are creating the future.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Venture Guides	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	36 contacts →
	Exact match “Venture Guides is an early-stage infrastructure software investment firm with a unique team based approach that has resulted in over 80% of portfolio companies generating positive…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Conjoin Group	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	201-500	36 contacts →
	Exact match “The ConJoin Group aligns with Venture Capital and Private Equity firms by investing our own capital,$250M in committed funds, and delivering a suite of services designed to…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Mendoza Ventures	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	n/a	34 contacts →
	Exact match “Firm overview Mendoza Ventures is an early-stage and growth venture fund based in Boston.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Transformation Capital	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	28 contacts →
	Exact match “Never in history has there been a better time to change and improve the $3 trillion healthcare system and lead the charge in its disruption.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Elephant	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	27 contacts →
	Exact match “Elephant is a venture capital firm focused on investing in fast-growing, capital-efficient technology companies.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Raptor Group	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	27 contacts →
	Exact match “At The Raptor Group, we source and invest in companies across various stages and asset classes, ranging from early stage to both private and public equity to funds.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Digital Fuel Capital	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	26 contacts →
	Exact match “We are passionate about digital marketing: the marriage of science and art, the ability to test and innovate rapidly and the opportunities to serve distinct consumer interests and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Guidepost Growth Equity	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	11-50	25 contacts →
	Exact match “Guidepost Growth Equity is a leading growth equity firm that partners with technology companies offering innovative solutions in large, dynamic markets including tech-enabled…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Learnlaunch Fund Accelerator	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	23 contacts →
	Exact match “LearnLaunch Fund + Accelerator is an impact-driven VC fund and accelerator that invests in and supports entrepreneurs on the mission to transform education positively.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Catalyst Health Ventures	Exact match	Boston, MA, United StatesHQ recorded Sep 20, 2026	1-10	23 contacts →
	Exact match “CHV (Catalyst Health Ventures) invests in transformative MedTech companies that are addressing global unmet healthcare needs and have the potential to become the new standard of…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “funded tech startups”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 181 funded tech startups based in Boston, United States

See the full list, filter by size, metro and specialty, and access 1,034 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Funded tech startups based in Boston, United States at a glance

As of Sep 20, 2026

41.0%Verified-email coverage

14.0Average contacts per company

1-10Median size (employees)

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

137

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 181 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Boston, United States whose business descriptions match “funded tech startups” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,034 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Funded tech startups by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “funded tech startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many funded tech startups are there based in Boston, United States?

RevenueBase identified 181 company matches for funded tech startups associated with Boston, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

RA Capital Management tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most funded tech startups?

New York leads the United States with 807 company records, followed by San Francisco (680) and Los Angeles (219). Boston has 181.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,034 professional contacts with verified work emails tracked across these 181 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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.