Company lists · Data refreshed September 2026

Top 21 Software as a service app developers based in Seattle, United States

Name: Software as a service app developers based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 63 companies tracked

RevenueBase identified 63 company matches for software as a service app developers associated with Seattle, United States as of September 2026 and tracks 580 professional contacts across them, including 158 with verified work emails. Across the United States, New York is the largest hub for this category (358 companies); Seattle has 63.

This list covers company matches for software as a service app developers associated with Seattle, 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 6, 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 6, 2026 How this list was built

63Companies

580Contacts tracked

158Verified emails

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The 21 largest software as a service app developers based in Seattle, United States

Ranked by team size

Top 21 of 63 company matches for software as a service app developers based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 6, 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	White Rabbit Group	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	51-200	135 contacts →
	Exact match “White Rabbit Group is a software development agency with a highly diverse and creative team that takes an idea through development and into scale.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
2	Ukad Umbraco, Optimizely And Azure Solution Partner	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	201-500	123 contacts →
	Exact match “UKAD is a helping companies extend engineering capacity and deliver complex solutions with predictable outcomes.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
3	2nd Watch	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	201-500	67 contacts →
	Exact match “2nd Watch is now Ollion.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
4	Pubgenius INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	11-50	25 contacts →
	Exact match “At pubGENIUS we build software that helps great ideas become real products.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
5	NEW Normal	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	11-50	25 contacts →
	Exact match “NewNormal builds custom software and lasting partnerships Since 2012 we’ve helped clients turn ideas into products that scale.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
6	Pelotech	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	11-50	17 contacts →
	Exact match “We partner with companies, from Fortune 500 giants to mid-sized businesses, to solve complex challenges in cloud migrations, integrations, application development and…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
7	Lunarbyte	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	12 contacts →
	Exact match “Lunarbyte is a custom software and product development firm trusted by teams across industries to deliver dependable, scalable software solutions that drive real business results.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
8	Fostec	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	8 contacts →
	Exact match “Founded in 1998, Fostec is a client-focused Information Technology consulting firm that designs solutions and provides technical expertise to small and mid-sized businesses…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
9	Gols INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	11-50	7 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
10	Pacific Automation Group	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	4 contacts →
	Exact match “We create and deploy tailor-made software solutions aimed at enhancing efficiency and optimizing operations for a diverse range of clients, spanning individuals, businesses…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
11	Zaifworks LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	4 contacts →
	Exact match “Zaifworks is software development and cloud consulting firm that specializes in healthcare, real-estate and it services industries.* We transform, deploy and support what you are…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
12	Activated, INC	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	3 contacts →
	Exact match “Activated helps technology organizations apply AI across software, infrastructure, security, and product management.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
13	ASMBL	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	51-200	3 contacts →
	Exact match “At Assemble, our people are the source of our success.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
14	Konstankino Associates	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	3 contacts →
	Exact match “We utilize Software Development Life Cycle processes to produce web applications with the highest quality and lowest cost in the shortest time.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
15	AA Cloud	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	11-50	2 contacts →
	Exact match “Founded in 2014 by a group of young and ambitious tech-entrepreneurs, AA Cloud conceptualizes and implements creative cloud solutions tailored to your specific business needs.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
16	Global IT Solutions	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	2 contacts →
	Exact match “Global IT Solutions offers outstanding digital solutions tailored for modern businesses, including web and mobile development, digital transformation, AWS cloud services…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
17	Jcmobtech LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	1 contacts →
	Exact match “We are Software Engineers that are passionate about converting great ideas into unique and reliable software solutions that helps the business growth.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
18	DB WEB Forge	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	1 contacts →
	Exact match “DB Web Forge is a full-service web and software development company with over 14 years of experience that specializes in building custom websites, apps, and software solutions for…” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
19	Protrero	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	1 contacts →
	Exact match “Protrero is a Seattle-based technology consulting firm specializing in modern cloud solutions and low-code platforms.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
20	Buddio Tech	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	1 contacts →
	Exact match “Buddio Tech build mobile apps.” Recorded in the RevenueBase company graph · Sep 6, 2026 · View company records in RevenueBase
21	Inner Product LLC	Exact match	Seattle, WA, United StatesHQ recorded Sep 6, 2026	1-10	1 contacts →
	Exact match “Inner Product builds great software for the enterprise.” Recorded in the RevenueBase company graph · Sep 6, 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 “software as a service app developers”. 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 21 of 63 software as a service app developers based in Seattle, United States

See the full list, filter by size, metro and specialty, and access 158 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Software as a service app developers based in Seattle, United States at a glance

As of Sep 6, 2026

27.2%Verified-email coverage

9.2Average contacts per company

1-10Median size (employees)

Sep 6, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 63 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 Seattle, United States whose business descriptions match “software as a service app developers” 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 158 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 6, 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.

Software as a service app developers 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 “software as a service app developers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many software as a service app developers are there based in Seattle, United States?

RevenueBase identified 63 company matches for software as a service app developers associated with Seattle, 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?

White Rabbit Group 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 software as a service app developers?

New York leads the United States with 358 company records, followed by Austin (217) and Sheridan (153). Seattle has 63.

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 158 professional contacts with verified work emails tracked across these 63 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 6, 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.