Top App Development Companies in Washington

Between them, the 31 app development companies on this page cover medical (8), financial services (7), business services (7) and eCommerce (7). They also list work in Latin America. 31 of them have written a profile you can read before you get in touch.

1. 1

   

   Hillmann & Carr Inc

   Video · Creative · Also in Oklahoma City and Oklahoma

   Hillmann & Carr Inc produces media for exhibitions and learning venues, mixing video, audio and interactive technology.

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   Why #1: Based in Washington D.C. and Toronto, Canada · Founded 1974 — as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

2. 2

   

   Axiom Corporation

   Medical · Government

   Axiom Corporation is a small professional services and technology consultancy that has worked for the US federal government and Department of Defense since 1988.

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   Why #2: Based in Atlanta, Georgia, with offices near Washington, DC and in Fort Worth, Texas · Founded 1988 — as stated on its own website, read 28 Sept 2026

   Not yet on record: client reviews, vetting.

3. 3

   

   Formos

   Outsourcing · Also in Ho Chi Minh City and Europe

   Formos is a software development company founded in 2003 and headquartered in Vancouver, Washington.

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   Why #3: Based in Vancouver, Washington, USA · Founded 2003 — as stated on its own website, read 29 Sept 2026

   Not yet on record: client reviews, vetting.

4. =4

   

   3Advance

   Mobile App Development · Web Development · UI/UX Design · Also in United States of America

   3Advance is a product development company that has built applications since 2010.

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   Why #4 (shared): Office in Washington · Founded 2010 — as stated on its own website, read 5 Oct 2026

   Not yet on record: client reviews, vetting.

5. =4

   

   Geek Web Services

   Geek Web Services LLC is a small web development company in Spokane, Washington, set up in 2010.

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   Why #4 (shared): Based in Spokane, Washington · Founded 2010 — as stated on its own website, read 29 Sept 2026

   Not yet on record: client reviews, vetting.

6. 6

   

   DevelopersTroop- Website | App | Seo & Software development company

   Consumer Products & Services · Arts, Entertainment & Music · Advertising & Marketing · Also in Auckland

   DevelopersTroop- Website App Seo & Software development company is a digital agency building websites, apps and custom software, and running online marketing, since 2014.

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   Why #6: Address in Washington · Founded 2014 · Team of 20+ — as stated on its own website, read 29 Sept 2026

   Not yet on record: client reviews, vetting.

7. 7

   

   DreamsToLife, LLC

   Consumer Products & Services · Energy & Natural Resources · Business Services · Also in United States

   DreamsToLife, LLC is a web development agency based in Vancouver, Washington. It works with HubSpot and Shopify, and also builds on WordPress, Angular, Vue and React.

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   Why #7: Based in Vancouver, Washington, USA · Shopify partner — as stated on its own website, read 29 Sept 2026

   Not yet on record: client reviews, vetting.

8. Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
9. –

   

   Live Typing

   Web Development · UI/UX Design · E-Commerce Development · Also in United States of America

   Live Typing is a web and mobile app development company with a team of around 50 people.

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   On record: Based in Washington DC · Team of 50+ — as stated on its own website, read 5 Oct 2026

10. –

    

    Bit Bamboo, LLC

    Cloud · Creative · DevOps

    Bit Bamboo, LLC is a small group of developers that builds web applications with complex data models.

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11. –

    

    bLogix

    Custom Software Development · Web Development · WordPress · Also in Virginia and Carolina

    bLogix is a Salesforce and business consulting firm. It concentrates on generating demand, speeding up sales and improving how operations run, and it supplies certified Salesforce…

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12. –

    

    Blueprint Interactive

    Video

    Blueprint Interactive is a Washington DC digital agency that works for candidates, causes and organisations it supports.

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    On record: Based in Washington DC, United States

13. –

    

    CASoft Seattle

    CASoft Seattle runs IT infrastructure for organisations and writes custom software for them.

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    On record: Based in Kirkland, Washington, United States

14. –

    

    Consensus

    Advertising & Marketing · Financial Services · Business Services · Also in Latin America

    Consensus is a software development and staffing company that draws on engineering talent from Latin America.

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15. –

    

    Consensus Group

    Software Development · Software Testing · Cloud · Also in Latin America

    Consensus Group runs a software engineering and talent business that recruits its developers from across Latin America.

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16. –

    

    Dalmet Technologies LLC

    Consumer Products & Services · Arts, Entertainment & Music · Financial Services

    Dalmet Technologies LLC is a software development company in the Washington DC area, with its web presence placing it in Northern Virginia.

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    On record: Based in Northern Virginia, near Washington DC, USA

17. –

    

    Data Imagery

    Salesforce · Automation · Also in Tacoma

    Data Imagery is a small technology team in Tacoma, Washington, in the Pacific Northwest.

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    On record: Based in Tacoma, Washington, USA

18. –

    D

    Demo

    Cloud · Security · Cybersecurity · Also in California and York

    Technology decision-makers rely on Foundry events. Every month.

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19. –

    

    Digital Artefacts

    Medical · Onboarding · Also in Iowa

    Digital Artefacts (DA) provides study design services and an end-to-end digital health platform to run decentralized clinical studies

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20. –

    

    Drill Maps

    Drill Maps provides surveying hardware and software for the drilling industry, covering accurate positioning and shared data collection.

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    On record: Based in Bellevue, Washington, United States

21. –

    

    Equator Technologies

    Mobile App Development · Hospitality & Leisure · Financial Services · Also in Coimbatore

    Equator Technologies is an IT services company that builds web and mobile applications and tests software for businesses ranging from small firms to large enterprises.

    Write a review
22. –

    

    FDG Web, Inc

    Arts, Entertainment & Music · Financial Services · Information Technology · Also in Seattle

    FDG Web, Inc is a digital agency based just outside Seattle, Washington, in the Everett area.

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    On record: Based in Everett and Seattle area, Washington, USA

23. –

    

    Geoffrey Rose Design

    Geoffrey Rose Design is a web design and development service in Spokane, Washington, covering the city and nearby areas.

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    On record: Based in Spokane, Washington

24. –

    

    Grove Technologies

    Arts, Entertainment & Music · Advertising & Marketing · Business Services

    Grove Technologies provides managed IT support and cybersecurity in Washington, DC.

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    On record: Based in Washington, DC, USA

25. –

    

    Harlow Technologies

    Consumer Products & Services · Arts, Entertainment & Music · Custom Software Development · Also in Harlow and Los Angeles

    Harlow Technologies is a consultancy that builds custom business applications on the FileMaker and Claris platform and also provides IT support.

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