Top 100 Software Development Companies in Seattle
The Best of February 2026
The software development industry has been one of the most influential industries in the whole world. This technology has provided businesses and companies with vast solutions to help tackle their problems and improve their services. Regardless of the industry, you’ll be able to find a solution for your business, and if you can’t, partnering with a software company to develop your project is the best way to go. These developers are great at creating bespoke solutions that meet your needs and help you reach your goals.
By browsing The Manifest's platform, learn more about the best software development companies in Seattle today. Their platform provides an extensive list of the best B2B service providers in Seattle, where you can also find the roster of the leading local software developers. Visit their site to learn more.
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List of the Best Seattle Software Developers
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$10,000+10 - 49 employeesIrvine, CAHeadquartered in Irvine, California, Kingsmen Digital Ventures is a software development company. The firm offers Custom Software Development, Mobile App Development, UX/UI Design, E-Commerce Development, and more and is small.The firm was launched in 2017.Read More
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$10,000+10 - 49 employeesMedina, WAFlower Press Interactive is an artificial intelligence firm founded in 2001. Their small team is in Medina, Washington and offers Artificial Intelligence, UX/UI Design, AI Consulting, Custom Software Development, and more.Read More
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31$10,000+10 - 49 employeesEdmonton, CanadaDura Digital, an IT managed services company, is located in Edmonton, Canada; Montevideo, Uruguay and Seattle, Washington. Launched in 2020, the small team offers IT managed services, IT staff augmentation, web development, and mobile app development.Read More
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32$1,000+250 - 999 employeesBellevue, WARead More
E-commerce development firm Neighborsoft.team was established in 2009. Their midsize team is headquartered in Bellevue, Washington. Neighborsoft.team provides e-commerce development, web development, custom software development, mobile app development, and more.
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33$1,000+10 - 49 employeesNewcastle, WAHyperBeans is a web development firm headquartered in Newcastle, Washington. The agency offers Web Development, Mobile App Development, Custom Software Development, Enterprise App Modernization, and more and has a small team.The agency was launched in 2011.Read More
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34Undisclosed50 - 249 employeesSeattle, WANTSprint LLC is a software development company. They are located in Seattle, Washington and have midsize team of experts. Their services include Custom Software Development and Web Development.Read More
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35$1,000+10 - 49 employeesSeattle, WATekByt LLC is a web design agency established in 2024. They are in Seattle, Washington and have a small team. Their services include Web Design, UX/UI Design, Custom Software Development, Web Development, and more.Read More
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36$5,000+2 - 9 employeesBurien, WASandcastle Web Design and Development is a software development company established in 1998. The team specializes in Custom Software Development and Mobile App Development.Read More
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Aviation Supplies & Academics Cevala / Brandvia Allegiant Commercial Asset Services GroupIndustries
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37$10,000+10 - 49 employeesSeattle, WAAlly, a web design company, was launched in 2025. They are based in Seattle, Washington and have a small team. Ally provides Web Design, UX/UI Design, Custom Software Development, Web Development, and more.Read More
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38$10,000+10 - 49 employeesSeattle, WARead More
Helpful Human is a development agency based in Seattle. Since 2013, their team of 15 has been specializing in web design and development, mobile app development, and UX/UI design. They work primarily with small businesses in the information services and business services industries.
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Rudy'sIndustries
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39$1,000+10 - 49 employeesRedmond, WAAstrabitLLC is a software development firm founded in 2025. The small Redmond, Washington-based team provides Custom Software Development, Web Development, Mobile App Development, Artificial Intelligence, and more.Read More
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40$1,000+50 - 249 employeesSeattle, WAFive Quantum Bits is a midsize app development firm founded in 2013. Their team specializes in Mobile App Development, Artificial Intelligence, Custom Software Development, and Web Development. The agency is based in Seattle, Washington.Read More
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41$25,000+2 - 9 employeesSeattle, WACodble is a Seattle, Washington-based application development firm. Founded in 2020, the small team offers Mobile App Development, Custom Software Development, Web Development, IT strategy consulting, and more.Read More
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42$1,000+50 - 249 employeesSeattle, WAConnectPOS is a software development firm. They were founded in 2013 and specialize in Custom Software Development and Application Management & Support.Read More
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43$100,000+50 - 249 employeesSeattle, WALaunched in 2000, Carbon Five is a custom software development company. Their team specializes in Custom Software Development and Mobile App Development.Read More
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44$10,000+50 - 249 employeesSeattle, WADevblock is a software development company. Based in Seattle, Washington and Ho Chi Minh, Vietnam, the company offers Custom Software Development and Web Development.Read More
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45$10,000+10 - 49 employeesSeattle, WAPalador is a small custom software development firm headquartered in Seattle, Washington and Yogyakarta, Indonesia. Their services include Custom Software Development and Enterprise App Modernization.Read More
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46$5,000+10 - 49 employeesSeattle, WALaunched in 2017, Fenyx Studio is a mobile app development company. The small team specializes in Mobile App Development and Web Development.Read More
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47$10,000+50 - 249 employeesChicago, ILDMC, Inc., a custom software development firm, is based in Chicago, Illinois and Somerville, Massachusetts. The team provides Custom Software Development and CRM consulting and SI.Read More
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3MIndustries
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48Undisclosed250 - 999 employeesBellevue, WAFresh Consulting is a custom software development firm established in 2007. The midsize team provides Custom Software Development and UX/UI Design.Read More
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49Undisclosed50 - 249 employeesLynnwood, WAEstablished in 1994, TransAct Communications, LLC is a custom software development company. The agency focuses on Custom Software Development and Translation.Read More
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50$5,000+10 - 49 employeesSeattle, WACaravel Labs is a software development firm. The Seattle, Washington-based firm specializes in Custom Software Development and Mobile App Development.Read More
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51$1,000+10 - 49 employeesLynnwood, WATechlusion LLC is a cloud consulting & SI company. Their small team is in Lynnwood, Washington and Ahmedabad, India. Their services include cloud consulting & SI and IT staff augmentation.Read More
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52$25,000+250 - 999 employeesKraków, PolandPwrteams is an IT staff augmentation company. Their midsize team is based in Kraków, Poland; L'viv, Ukraine; Koerich, Luxembourg and Berlin, Germany. The company provides IT staff augmentation, Custom Software Development, Application Testing, Staffing, and more. The company was launched in 2007.Read More
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SiteCore TUI News UK Dow JonesIndustries
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53$1,000+250 - 999 employeesRedmond, WAHarbinger Group is an AI company. The Redmond, Washington-based team specializes in Artificial Intelligence and Custom Software Development.Read More
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54$5,000+10 - 49 employeesSeattle, WAAMP Creative is a Corporate Training & Coaching company. The Dallas, Texas-based company was launched in 2002. Their services include Corporate Training & Coaching and Video Production.Read More
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55Undisclosed50 - 249 employeesIssaquah, WAIn Issaquah, Washington, FluentPro Software Corporation is an IT strategy consulting company. The team specializes in IT strategy consulting and BI & big data consulting & SI.Read More
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56Undisclosed2 - 9 employeesKirkland, WAEstablished in 2016, PiorSoft, a small software development company, is located in Kirkland, Washington. Their team offers Custom Software Development.Read More
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57$250,000+2 - 9 employeesRenton, WACoreUs is a software development firm. The Renton, Washington-based company provides Custom Software Development and UX/UI Design.Read More
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58$5,000+2 - 9 employeesFederal Way, WABeamshift is a software development firm. Their small team is in Federal Way, Washington and specializes in Custom Software Development and Web Development. The agency was founded in 2024.Read More
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59$25,000+250 - 999 employeesRedmond, WABased in Redmond, Washington and Virgin Islands (U.S.), Plain Concepts is an AI firm. They focus on Artificial Intelligence and BI & big data consulting & SI and were established in 2006.Read More
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60$10,000+50 - 249 employeesSeattle, WASoftware development firm White Rabbit Group Inc was established in 2016. The company provides Custom Software Development and Web Development.Read More
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