Company lists · Data refreshed September 2026

Top 25 Enterprise startups based in Seattle, United States

Name: Enterprise startups based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 70 companies tracked

RevenueBase identified 70 enterprise startups headquartered in Seattle, United States as of September 2026 and tracks 986 professional contacts across them, including 421 with verified work emails. Across the United States, New York is the largest hub for this category (445 companies); Seattle has 70.

This list covers enterprise startups headquartered in Seattle, 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 28, 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 28, 2026 86% judged on-target in blind review

70Companies

986Contacts tracked

421Verified emails

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The 25 largest enterprise startups based in Seattle, United States

Ranked by team size

Top 25 of 70 enterprise startups based in Seattle, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to enterprise startups: 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	Blackstone EIT	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1,001-5,000	270 contacts →
	Partial evidence “Blackstone eIT is a leading System Integrator (SI) and Independent Software Vendor (ISV), globally dedicated to engineering transformative enterprise solutions and intelligent…” Source: RevenueBase Database · checked Sep 28, 2026
2	Ukad Umbraco, Optimizely And Azure Solution Partner	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	201-500	123 contacts →
	Indirect evidence “UKAD is a helping companies extend engineering capacity and deliver complex solutions with predictable outcomes.” Source: RevenueBase Database · checked Sep 28, 2026
3	Audax Labs	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	51-200	94 contacts →
	Indirect evidence “Audax Labs - Outcome-Driven Innovation!” Source: RevenueBase Database · checked Sep 28, 2026
4	Madrona	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	84 contacts →
	Indirect evidence “Seed, early stage and acceleration stage investor and partner for founders.” Source: RevenueBase Database · checked Sep 28, 2026
5	2nd Watch	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	201-500	67 contacts →
	Indirect evidence “2nd Watch is now Ollion.” Source: RevenueBase Database · checked Sep 28, 2026
6	Tola Capital	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	40 contacts →
	Partial evidence “Tola Capital is a venture capital firm that focuses on the once-in-a-generation opportunity to invest in the next wave of enterprise software companies enabled by the new data and…” Source: RevenueBase Database · checked Sep 28, 2026
7	Pioneer Square Labs	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	40 contacts →
	Partial evidence “Pioneer Square Labs is a Seattle-based studio that creates and launches technology startups.” Source: RevenueBase Database · checked Sep 28, 2026
8	Palador	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “Palador has provided successful enterprise solutions and strategic initiatives for mobility, app and web development and data and software integration since 2005.” Source: RevenueBase Database · checked Sep 28, 2026
9	FUSE	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	24 contacts →
	Indirect evidence “FUSE is a venture capital firm based in the Pacific Northwest that partners with early-stage software entrepreneurs.” Source: RevenueBase Database · checked Sep 28, 2026
10	SITG	Partial evidence	Seattle, United StatesHQ checked Sep 28, 2026	11-50	19 contacts →
	Partial evidence “SITG has experience and expertise in building complex Cloud & Enterprise applications esp.” Source: RevenueBase Database · checked Sep 28, 2026
11	Voyager Capital	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “Voyager Capital is a leading Pacific Northwest venture firm providing entrepreneurs with the resources, experience and connections to build successful technology companies.” Source: RevenueBase Database · checked Sep 28, 2026
12	Acequia Capital	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “The Acequia Capital partnership and distributed network is agile, diversified, and market tested.” Source: RevenueBase Database · checked Sep 28, 2026
13	Unlock Venture Partners	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “Unlock Venture Partners is a venture capital firm focused on early-stage technology investments in Seattle and Los Angeles.” Source: RevenueBase Database · checked Sep 28, 2026
14	Rivet Hammer	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	9 contacts →
	Indirect evidence “At Rivet Hammer, we specifically look for partnerships where we can apply years of building successful technology companies to the business strategy and product development…” Source: RevenueBase Database · checked Sep 28, 2026
15	Looi Consulting LLC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	7 contacts →
	Indirect evidence “Looi Consulting LLC, a dynamic US-based technology consulting and solutions powerhouse, specializes in propelling businesses forward by seamlessly integrating people and…” Source: RevenueBase Database · checked Sep 28, 2026
16	Tecknowcore LLC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “Tecknowcore is a boutique technology partner supporting multinational organizations in the design and delivery of complex, mission-critical digital solutions.” Source: RevenueBase Database · checked Sep 28, 2026
17	RA Delta	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	51-200	6 contacts →
	Indirect evidence “A multi-vertical investor program that was founded in 2018 with a goal to support progressive and passionate entrepreneurs in starting up and scaling up their business.” Source: RevenueBase Database · checked Sep 28, 2026
18	Fortson VC	Indirect evidence	Seattle, United StatesHQ checked Sep 28, 2026	1-10	5 contacts →
	Indirect evidence “Fortson VC is a venture capital firm based in the pacific northwest that partners with curious and courageous founders who are pushing the boundaries of what’s possible.” Source: RevenueBase Database · checked Sep 28, 2026
19	Founders Co-Op	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Founders Co-op is the leading seed-stage investment fund in the Pacific Northwest.” Source: RevenueBase Database · checked Sep 28, 2026
20	Aerware Technologies	Indirect evidence	Seattle, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Indirect evidence “Innovating for tomorrow” Source: RevenueBase Database · checked Sep 28, 2026
21	Cloudwind	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	11-50	3 contacts →
	Indirect evidence “CloudWind is a leading provider of cutting-edge technologies and services, offering scalable solutions for businesses of all sizes.” Source: RevenueBase Database · checked Sep 28, 2026
22	Uprise Ventures	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Uprise is: a venture studio, a validation lab, and a micro PE firm.” Source: RevenueBase Database · checked Sep 28, 2026
23	View Different	Indirect evidence	Seattle, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Indirect evidence “Our portfolio primarily consists of seed and early-stage investments.” Source: RevenueBase Database · checked Sep 28, 2026
24	Voystar Ventures	Indirect evidence	Seattle, United StatesHQ checked Sep 28, 2026	11-50	1 contacts →
	Indirect evidence “We help accelerate disruptive ideas into successful platforms.” Source: RevenueBase Database · checked Sep 28, 2026
25	Inner Product LLC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “Inner Product builds great software for the enterprise.” Source: RevenueBase Database · checked Sep 28, 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: enterprise startups. 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 enterprise startups.
Partial evidence: Its own public description names part of enterprise startups, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name enterprise startups. 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 70 enterprise startups based in Seattle, United States

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Enterprise startups based in Seattle, United States at a glance

As of Sep 28, 2026

42.7%Verified-email coverage

14.1Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 70 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 enterprise startups, 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 Seattle, United States whose own description of what they do matches “enterprise startups”. 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 enterprise startups), 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 enterprise startups, and records with no verified work email. Companies headquartered outside Seattle 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, 421 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 28, 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.

Enterprise startups 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 enterprise startups, 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 enterprise startups are there based in Seattle, United States?

RevenueBase identified 70 enterprise startups headquartered in Seattle, 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?

Blackstone EIT, headquartered in Seattle, tops this list with the largest team on record.

Which city in the United States has the most enterprise startups?

New York leads the United States with 445 headquartered companies, followed by San Francisco (364) and Los Angeles (159). Seattle has 70.

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 421 verified decision-maker contacts tracked across these 70 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 28, 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.