Company lists · Data refreshed September 2026

Top 25 B2B tech companies based in San Francisco, United States

Name: B2B tech 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 Sep 19, 2026 71 companies tracked

RevenueBase identified 71 B2B tech companies headquartered in San Francisco, United States as of September 2026 and tracks 4,733 professional contacts across them, including 1,328 with verified work emails. New York is the largest hub.

This list covers B2B tech companies headquartered in San Francisco, 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 19, 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 19, 2026 86% judged on-target in blind review

71Companies

4,733Contacts tracked

1,328Verified emails

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The 25 largest B2B tech companies based in San Francisco, United States

Ranked by team size

Top 25 of 71 B2B tech companies based in San Francisco, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to B2B tech companies: 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	Wizeline	Indirect evidence	San Francisco, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,598 contacts →
	Indirect evidence “Wizeline, a global technology services provider, builds the best digital products and platforms at scale.” Source: RevenueBase Database · checked Sep 19, 2026
2	Appdirect	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	501-1,000	924 contacts →
	Partial evidence “AppDirect is a San Francisco-based B2B subscription commerce platform company that brings together technology providers, advisors, and businesses to simplify how they buy, sell…” Source: RevenueBase Database · checked Sep 19, 2026
3	Salesify, INC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	547 contacts →
	Indirect evidence “At Salesify, we help you close deals faster.” Source: RevenueBase Database · checked Sep 19, 2026
4	Demandshore	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	501-1,000	478 contacts →
	Partial evidence “About DemandShore Since 2004, we’ve been working hard to deliver value to Sales & Marketing professionals across B2B Technology companies globally.” Source: RevenueBase Database · checked Sep 19, 2026
5	Kloudrac Group	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	201-500	199 contacts →
	Indirect evidence “With globalization making rapid changes across industries and consumers becoming ever so demanding, organizations need to quickly take account of their limited resources and…” Source: RevenueBase Database · checked Sep 19, 2026
6	Lateral Group	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	201-500	164 contacts →
	Indirect evidence “LATERAL (Technology with Passion) adds business value through full service technology solutions.” Source: RevenueBase Database · checked Sep 19, 2026
7	MINDK	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	124 contacts →
	Indirect evidence “MindK is a software development and IT consulting company that helps businesses build software products, automate business processes, modernize technology and infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
8	ATOM	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	501-1,000	113 contacts →
	Indirect evidence “Atom is a leading modern technology services company providing the most innovative cloud and digital transformation solutions, with carefully curated “living” services across…” Source: RevenueBase Database · checked Sep 19, 2026
9	Coditude	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	108 contacts →
	Partial evidence “Coditude stands out as a rapidly growing force in the digital realm, offering straightforward, impactful tech capabilities.” Source: RevenueBase Database · checked Sep 19, 2026
10	Ziff Davis B2B	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	55 contacts →
	Partial evidence “Ziff Davis B2B is the global market leader in omni-channel B2B marketing, providing our customers with precise access to the world’s most powerful technology buyers.” Source: RevenueBase Database · checked Sep 19, 2026
11	Dealsignal	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	31 contacts →
	Partial evidence “DealSignal provides fresh, accurate, verified B2B data that helps sales & marketing teams maximize their efficiency, performance and results.” Source: RevenueBase Database · checked Sep 19, 2026
12	Sally AI Sales Representative	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	29 contacts →
	Partial evidence “Powering B2B growth with outbound systems that attract mid-size and enterprise-qualified leads.” Source: RevenueBase Database · checked Sep 19, 2026
13	Simpler Media Group, INC	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	27 contacts →
	Partial evidence “SMG is a B2B technology information, events and research services company serving 7 million+ global digital business leaders.” Source: RevenueBase Database · checked Sep 19, 2026
14	Langtech	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	27 contacts →
	Indirect evidence “Business survival today is dependent upon instant delivery of targeted information to all facets of the organization.” Source: RevenueBase Database · checked Sep 19, 2026
15	Groupa	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	51-200	17 contacts →
	Indirect evidence “GroupA is an Enterprise Cloud Services firm working with PE sponsors, portfolio companies, and complex enterprise environments across North America.” Source: RevenueBase Database · checked Sep 19, 2026
16	Ignition	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “The Ignition team delivers the friendliest dang tech support your business has ever seen.” Source: RevenueBase Database · checked Sep 19, 2026
17	Leadbay YC F25	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	1-10	14 contacts →
	Indirect evidence “Leadbay qualifies leads for agentic workflows.” Source: RevenueBase Database · checked Sep 19, 2026
18	Olivine Marketing	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	13 contacts →
	Partial evidence “Olivine Marketing is a full-service product marketing agency for B2B SaaS companies, founded in 2016.” Source: RevenueBase Database · checked Sep 19, 2026
19	Astellent	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “Astellent is a consulting company that improves how software is designed, developed, and delivered to help organizations achieve more.” Source: RevenueBase Database · checked Sep 19, 2026
20	Cold Email Hackers	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	1-10	4 contacts →
	Partial evidence “Helping B2B SaaS companies generate pipeline, course-correct their product offering, and increase valuations.” Source: RevenueBase Database · checked Sep 19, 2026
21	Digi2s	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	3 contacts →
	Indirect evidence “We are a dedicated team of professionals who help businesses in all their technological needs by designing, implementing and protecting all aspects of their operations.” Source: RevenueBase Database · checked Sep 19, 2026
22	D3	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	1-10	2 contacts →
	Indirect evidence “D3 is a professional services company, providing a broad range of services in technology, strategy and consulting.” Source: RevenueBase Database · checked Sep 19, 2026
23	Conexa	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	1 contacts →
	Indirect evidence “Somos un Software Factory fundado en Octubre de 2016 que cree en brindar un servicio por encima de las expectativas.” Source: RevenueBase Database · checked Sep 19, 2026
24	Blue Rock Networks, LLC	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	1 contacts →
	Indirect evidence “Blue Rock Networks is an IT services provider based in San Francisco, who specializes in supporting small and medium sized business.” Source: RevenueBase Database · checked Sep 19, 2026
25	KAP Co., LLC	Indirect evidence	San Francisco, United StatesHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Kap Co, LLC is a technology consulting company located in Silicone Valley.” Source: RevenueBase Database · checked Sep 19, 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: B2B tech companies. 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 B2B tech companies.
Partial evidence: Its own public description names part of B2B tech companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name B2B tech companies. 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 71 B2B tech companies based in San Francisco, United States

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B2B tech companies based in San Francisco, United States at a glance

As of Sep 19, 2026

28.1%Verified-email coverage

66.7Average contacts per company

11-50Median size (employees)

354.9%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

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 71 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 B2B tech companies, 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 San Francisco, United States whose own description of what they do matches “B2B tech companies”. 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 B2B tech companies), 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 B2B tech companies, and records with no verified work email. Companies headquartered outside San Francisco 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, 1,328 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 19, 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.

B2B tech companies by metro in the United States

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 B2B tech companies, 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 B2B tech companies are there based in San Francisco, United States?

RevenueBase identified 71 B2B tech companies headquartered in San Francisco, 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?

Wizeline, headquartered in San Francisco, tops this list with the largest team on record.

Which city has the most B2B tech companies?

New York leads with 252 headquartered companies, followed by Houston (151) and Austin (136).

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 1,328 verified decision-maker contacts tracked across these 71 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 19, 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.