Company lists · Data refreshed October 2026

Top 25 Startup engagement platform companies based in San Francisco, United States

Name: Startup engagement platform companies based in San Francisco, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 20, 2026 356 companies tracked

RevenueBase identified 356 company matches for startup engagement platform companies associated with San Francisco, United States as of October 2026 and tracks 36,418 professional contacts across them, including 1,349 with verified work emails. Across the United States, New York is the largest hub for this category (423 companies); San Francisco follows with 356.

This list covers company matches for startup engagement platform companies associated with San Francisco, 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 October 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 Oct 20, 2026 How this list was built

356Companies

36,418Contacts tracked

1,349Verified emails

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The 25 largest startup engagement platform companies based in San Francisco, United States

Ranked by team size

Top 25 of 356 company matches for startup engagement platform companies based in San Francisco, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 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	Hustle Fund	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	n/a	661 contacts →
	Exact match “Hustle Fund is a venture capital firm investing in hilariously-early pre-seed founders.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
2	Angellist	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	51-200	426 contacts →
	Exact match “AngelList builds the infrastructure where capital, creativity, and hard work come together to accelerate the rate of innovation.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
3	Alchemist Accelerator	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	n/a	281 contacts →
	Exact match “The Alchemist Accelerator is a venture-backed initiative focused on accelerating the development of seed-stage ventures that monetize from enterprises (not consumers).” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
4	ODF	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	n/a	242 contacts →
	Exact match “Our mission is to help more people start better startups.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
5	NEO	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	n/a	225 contacts →
	Exact match “Neo is a diverse mentorship community, startup accelerator, and VC fund.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
6	Nextgen Venture Partners	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	n/a	204 contacts →
	Exact match “NextGen Venture Partners works with over 1,800 Venture Partners to invest $1 million in seed stage companies and $2 million to $10 million in companies with more than $10 million…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
7	First Round Capital	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	n/a	177 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
8	Nexus Venture Partners	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	125 contacts →
	Exact match “Nexus Venture Partners is a venture capital firm that supports extraordinary founders in building product-first companies.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
9	Band Of Angels	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	51-200	94 contacts →
	Exact match “The Band of Angels is Silicon Valley's oldest seed funding organization.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
10	Harmonic	Exact match	San Francisco, United StatesHQ recorded Oct 20, 2026	51-200	89 contacts →
	Exact match “Harmonic is the complete startup database.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
11	Signalfire	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	87 contacts →
	Exact match “SignalFire is the first venture capital firm built like a technology company to better solve for the needs of founders.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
12	Mind The Bridge	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	51-200	73 contacts →
	Exact match “Mind the Bridge is a global open innovation platform that empowers economies through entrepreneurship and innovation.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
13	CRV	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	71 contacts →
	Exact match “CRV is a venture capital firm that invests in early-stage tech startups.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
14	Launch	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	66 contacts →
	Exact match “Founded by Jason Calacanis.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
15	Village Global	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	58 contacts →
	Exact match “At Village Global, early-stage capital is just the beginning.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
16	Susa Ventures	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	49 contacts →
	Exact match “https://susaventures.com/” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
17	Cota Capital	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	48 contacts →
	Exact match “Cota Capital is an early-stage investment firm that builds and invests in technology companies addressing “Net New” challenges in the enterprise.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
18	Emergence Capital	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	46 contacts →
	Exact match “Emergence Capital invests in people who change the way the world works.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
19	Cathay Innovation	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	44 contacts →
	Exact match “Cathay Innovation is a multistage venture capital firm, affiliated to Cathay Capital, investing in founders building transformative businesses across Europe, North America, Asia…” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
20	acquire.com	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	41 contacts →
	Exact match “The largest startup acquisition marketplace.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
21	The Vault	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	41 contacts →
	Exact match “The Vault is a collaborative community of startups, investors, corporate innovators and advisors based in the heart of San Francisco's Innovation District, Jackson Square.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
22	BLING	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	34 contacts →
	Exact match “We help ambitious and forward looking enterprise leaders transform their entire high volume hiring process.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
23	Entrapeer	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	33 contacts →
	Exact match “Entrapeer is the first use case-based innovation matchmaking platform.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
24	Initialized Capital	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	32 contacts →
	Exact match “We set the standard in seed stage venture capital, backing founders with grit, audacity, and a spark of rebellion.” Recorded in the RevenueBase company graph · Oct 20, 2026 · View company records in RevenueBase
25	Transpose Platform	Exact match	San Francisco, CA, United StatesHQ recorded Oct 20, 2026	11-50	31 contacts →
	Exact match “Transpose Platform is redefining early-stage investing by backing the next generation of venture structures, accelerators, and the breakout companies they nurture.” Recorded in the RevenueBase company graph · Oct 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 “startup engagement platform companies”. 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 356 startup engagement platform companies based in San Francisco, United States

See the full list, filter by size, metro and specialty, and access 1,349 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Startup engagement platform companies based in San Francisco, United States at a glance

As of Oct 20, 2026

3.7%Verified-email coverage

102.3Average contacts per company

1-10Median size (employees)

Oct 20, 2026Page data refreshed

Companies by employee count

1-10

249

11-50

51-200

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 356 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 San Francisco, United States whose business descriptions match “startup engagement platform companies” 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 1,349 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 October 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.

Startup engagement platform companies 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 “startup engagement platform companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many startup engagement platform companies are there based in San Francisco, United States?

RevenueBase identified 356 company matches for startup engagement platform companies associated with San Francisco, United States as of October 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?

Hustle Fund 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 startup engagement platform companies?

New York leads the United States with 423 company records, followed by San Francisco (356) and Los Angeles (117).

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 1,349 professional contacts with verified work emails tracked across these 356 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 October 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.