Company lists · Data refreshed September 2026

Top 25 Software angel investors based in the United States

Name: Software angel investors based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 2,008 companies tracked

RevenueBase identified 2,008 software angel investors headquartered in the United States as of September 2026 and tracks 31,029 professional contacts across them, including 6,429 with verified work emails. New York is the largest hub.

This list covers software angel investors 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 29, 2026 86% judged on-target in blind review

2,008Companies

31,029Contacts tracked

6,429Verified emails

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The 25 largest software angel investors based in the United States

Ranked by team size

Top 25 of 2,008 software angel investors based in the United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to software angel investors: 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	Y Combinator	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	n/a	3,283 contacts →
	Indirect evidence “Y Combinator is the leading startup accelerator for entrepreneurs.” Source: RevenueBase Database · checked Sep 29, 2026
2	Techstars	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	n/a	1,803 contacts →
	Indirect evidence “Techstars helps founders scale their startups into world-changing businesses.” Source: RevenueBase Database · checked Sep 29, 2026
3	Microsoft For Startups	Indirect evidence	Redmond, WA, United StatesHQ checked Sep 29, 2026	10001+	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, 2026
4	Founder Institute	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 29, 2026	n/a	1,246 contacts →
	Indirect evidence “The Founder Institute is the World’s Largest AI-Native Company Builder, where ambitious professionals, solo founders, and first-time entrepreneurs go to turn ideas into funded…” Source: RevenueBase Database · checked Sep 29, 2026
5	Insight Partners	Strong evidence	New York, NY, United StatesHQ checked Sep 29, 2026	201-500	623 contacts →
	Strong evidence “Insight Partners is a global software investor partnering with high-growth technology, software, and Internet startup and ScaleUp companies that are driving transformative change…” Source: RevenueBase Database · checked Sep 29, 2026
6	Lvlup Ventures	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	1,001-5,000	610 contacts →
	Indirect evidence “LvlUp Ventures is a global venture capital firm investing in and accelerating early-stage & late-stage startups.” Source: RevenueBase Database · checked Sep 29, 2026
7	Primary Venture Partners	Indirect evidence	New York, NY, United StatesHQ checked Sep 29, 2026	51-200	545 contacts →
	Indirect evidence “Primary is the world's largest early stage VC firm, with a billion in assets under management and 50 full time employees.” Source: RevenueBase Database · checked Sep 29, 2026
8	Startup Grind	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 29, 2026	n/a	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, 2026
9	Bessemer Venture Partners	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	201-500	402 contacts →
	Indirect evidence “Bessemer Venture Partners helps entrepreneurs lay strong foundations from inception to build long-standing companies.” Source: RevenueBase Database · checked Sep 29, 2026
10	Alchemist Accelerator	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	n/a	321 contacts →
	Indirect evidence “The Alchemist Accelerator is a venture-backed initiative focused on accelerating the development of seed-stage ventures that monetize from enterprises (not consumers).” Source: RevenueBase Database · checked Sep 29, 2026
11	Awesome INC	Indirect evidence	Lexington, KY, United StatesHQ checked Sep 29, 2026	n/a	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, 2026
12	ODF	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	n/a	258 contacts →
	Indirect evidence “Our mission is to help more people start better startups.” Source: RevenueBase Database · checked Sep 29, 2026
13	NEO	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	n/a	221 contacts →
	Indirect evidence “Neo is a diverse mentorship community, startup accelerator, and VC fund.” Source: RevenueBase Database · checked Sep 29, 2026
14	DFJ	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 29, 2026	51-200	205 contacts →
	Indirect evidence “DFJ is a venture capital firm that partners with extraordinary entrepreneurs who are changing the world.” Source: RevenueBase Database · checked Sep 29, 2026
15	First Round Capital	Indirect evidence	San Francisco, PA, United StatesHQ checked Sep 29, 2026	n/a	199 contacts →
	Indirect evidence “First Round is a venture capital firm that works with founders exclusively at the earliest stages of company building, often when all they have is an “imagine if.” We fill in…” Source: RevenueBase Database · checked Sep 29, 2026
16	Persist Ventures	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 29, 2026	201-500	176 contacts →
	Indirect evidence “Persist Ventures is a venture studio with a mission to accelerate innovation and altruism globally.” Source: RevenueBase Database · checked Sep 29, 2026
17	Pear VC	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 29, 2026	n/a	157 contacts →
	Indirect evidence “We’re specialists in pre-seed and seed.” Source: RevenueBase Database · checked Sep 29, 2026
18	Aximsoft	Indirect evidence	San Ramon, CA, United StatesHQ checked Sep 29, 2026	51-200	145 contacts →
	Indirect evidence “Aximsoft facilitates startups to build the future.” Source: RevenueBase Database · checked Sep 29, 2026
19	Sutter Hill Ventures	Indirect evidence	Palo Alto, United StatesHQ checked Sep 29, 2026	11-50	133 contacts →
	Indirect evidence “Sutter Hill Ventures has financed technology-based start-ups and assisted entrepreneurs in building market-leading companies since 1962.” Source: RevenueBase Database · checked Sep 29, 2026
20	Atomic	Indirect evidence	Miami, FL, United StatesHQ checked Sep 29, 2026	51-200	122 contacts →
	Indirect evidence “Atomic is the venture studio that pioneered the model of starting companies by pairing founders with the best ideas, teams, and resources.” Source: RevenueBase Database · checked Sep 29, 2026
21	SOSV	Indirect evidence	Princeton, NJ, United StatesHQ checked Sep 29, 2026	51-200	119 contacts →
	Indirect evidence “SOSV is the most active deep tech venture capital firm globally, investing at pre-seed (or at startup inception) supporting visionary founders intent on making a profound impact…” Source: RevenueBase Database · checked Sep 29, 2026
22	Nexus Venture Partners	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 29, 2026	11-50	116 contacts →
	Indirect evidence “Nexus Venture Partners is a venture capital firm that supports extraordinary founders in building product-first companies.” Source: RevenueBase Database · checked Sep 29, 2026
23	Entrepreneurs Roundtable Accelerator	Indirect evidence	NY, United StatesHQ checked Sep 29, 2026	n/a	114 contacts →
	Indirect evidence “Entrepreneurs Roundtable Accelerator (ERA) is New York City’s leading technology accelerator and early-stage venture capital fund.” Source: RevenueBase Database · checked Sep 29, 2026
24	Greylock Partners	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 29, 2026	51-200	111 contacts →
	Indirect evidence “Greylock was founded in 1965, one of the few venture firms that predates Silicon Valley.” Source: RevenueBase Database · checked Sep 29, 2026
25	FA Technology Ventures	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	n/a	109 contacts →
	Indirect evidence “FA Technology Ventures is an independent, established venture capital firm.” Source: RevenueBase Database · checked Sep 29, 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: software angel investors. 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 software angel investors.
Partial evidence: Its own public description names part of software angel investors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name software angel investors. 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 2,008 software angel investors based in the United States

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Software angel investors based in the United States at a glance

As of Sep 29, 2026

20.7%Verified-email coverage

15.5Average contacts per company

1-10Median size (employees)

11.6%Largest-city concentration · New York

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

1,469

11-50

434

51-200

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 2,008 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 software angel investors, 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 “software angel investors”. 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 software angel investors), 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 software angel investors, 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, 6,429 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.

Software angel investors 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 software angel investors, 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 software angel investors are there based in the United States?

RevenueBase identified 2,008 software angel investors 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 software angel investors?

New York leads with 233 headquartered companies, followed by San Francisco (228) and Palo Alto (69).

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 6,429 verified decision-maker contacts tracked across these 2,008 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.