Company lists · Data refreshed November 2026

Top 21 Web and mobile development agencies based in Seattle, United States

Name: Web and mobile development agencies based in Seattle, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 196 companies tracked

RevenueBase identified 196 company matches for web and mobile development agencies associated with Seattle, United States as of November 2026 and tracks 1,402 professional contacts across them, including 341 with verified work emails. Across the United States, New York is the largest hub for this category (1,233 companies); Seattle has 196.

This list covers company matches for web and mobile development agencies 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 November 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 Nov 6, 2026 How this list was built

196Companies

1,402Contacts tracked

341Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 21 largest web and mobile development agencies based in Seattle, United States

Ranked by team size

Top 21 of 196 company matches for web and mobile development agencies based in Seattle, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 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 Nov 6, 2026	51-200	127 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 · Nov 6, 2026 · View company records in RevenueBase
2	Pubgenius INC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	26 contacts →
	Exact match “At pubGENIUS we build software that helps great ideas become real products.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	NEW Normal	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	26 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 · Nov 6, 2026 · View company records in RevenueBase
4	Efelle Creative, Digital Marketing Agency	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	25 contacts →
	Exact match “efelle is an internationally recognized ecommerce & digital marketing agency based out of Seattle, Washington, delivering highly functional and engaging websites, applications…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Seattle NEW Media	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	24 contacts →
	Exact match “Seattle New Media is a leading Webflow development agency with offices in Seattle, WA and Orlando, FL.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	Bonsai Media Group	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	24 contacts →
	Exact match “Bonsai Media Group is a digital advertising agency headquartered in Seattle.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Exit83 Consulting	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	21 contacts →
	Exact match “Since 2007, EXIT83 Consulting has been assisting companies with Website Development, Software Architecture, Mobile Application Development, Business Analysis and Fundraising…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Marketeering Group	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	17 contacts →
	Exact match “Marketeering Group is the digital marketing agency delivering flexible solutions to complex problems with strategic and impact-driven SEO implementation.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	GENUI	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	13 contacts →
	Exact match “What sets GenUI apart is an end-to-end product focus throughout all our experience design and software development services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Mentor Creative Group	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	11 contacts →
	Exact match “Founded in 2014 as a digital creative agency of one, Mentor now has an entire team of creatives and developers along with offices in Seattle, WA and Miami, FL.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Lunarbyte	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	11 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 · Nov 6, 2026 · View company records in RevenueBase
12	Foundry Interactive	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	11 contacts →
	Exact match “We build, market and optimize websites that connect customers and businesses in ways that are both meaningful and measurable.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Blue Rooster INC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	10 contacts →
	Exact match “Blue Rooster is a modern digital agency driving Strategy, UX Design and Technology for today's enterprise.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Internet Development Studio Company	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	10 contacts →
	Exact match “Internet Development Studio Company (INTDEV) is your go-to design and engineering team, delivering high performance building, shipping, maintaining websites, platforms, brands…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Apsis Labs	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	9 contacts →
	Exact match “At Apsis Labs, we help product-driven teams bring high-quality web and mobile applications to life-quickly, cleanly, and with purpose.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Portent	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	9 contacts →
	Exact match “Since 1995, Portent has been delivering business-changing growth for brands in tech, travel, physical retail, e-commerce, publishing, and more.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	K Consulting	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	9 contacts →
	Exact match “Welcome to K.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Bizango	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	8 contacts →
	Exact match “We're a full-service web design and online marketing agency dedicated to serving businesses, bestselling authors, startups and e-commerce.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	L4 Digital, A Globant Company	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	51-200	8 contacts →
	Exact match “L4 Digital was founded in 2008 with the belief that great people build great products.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	PLY Interactive	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	1-10	7 contacts →
	Exact match “Ply designs exceptional websites and innovative applications for companies that seek to successfully build e-commerce websites or mobile applications.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	Gols INC	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	11-50	7 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 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 “web and mobile development agencies”. 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 196 web and mobile development agencies based in Seattle, United States

See the full list, filter by size, metro and specialty, and access 341 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Web and mobile development agencies based in Seattle, United States at a glance

As of Nov 6, 2026

24.3%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

134

11-50

51-200

201-500

501-1,000

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 196 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 “web and mobile development agencies” 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 341 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 November 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.

Web and mobile development agencies 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 “web and mobile development agencies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many web and mobile development agencies are there based in Seattle, United States?

RevenueBase identified 196 company matches for web and mobile development agencies associated with Seattle, United States as of November 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 web and mobile development agencies?

New York leads the United States with 1,233 company records, followed by Los Angeles (563) and Austin (499). Seattle has 196.

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 341 professional contacts with verified work emails tracked across these 196 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 November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 196 web and mobile development agencies based in Seattle, United States. Start with a free account, no credit card.

Download this list →

Related lists

Web and mobile development agencies by geography

Browse the directory

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.