Top Software Development Companies in Seattle | November, 2026
Researched by: RightFirms Research Team•Updated: Nov 11, 2026
Are you looking for a top software development company in Seattle?
Seattle-based software companies focus on designing tailored-fit technology solutions for the specific needs of your business. Whether it comes to customizing an existing application, running business intelligence operations for an online startup, or augmenting in-house staff with Seattle software developers, they have a dedicated team ready to get you running from day one.
RightFirms helps you get in touch with these best Seattle companies. We have prepared a list of Seattle software developers working in expert companies based on the company's portfolio, workforce expertise, budget, customer reviews, and ratings.
How this list is built: This list is prepared using multiple trust and relevance signals, including profile completeness, service expertise, reviews and review freshness, external business signals, and selected signals reviewed by the RightFirms research team. We regularly review these signals and update our listings to help buyers discover credible and relevant partners. Learn more about our methodology
Seasia Infotech is a global digital engineering company delivering AI-powered software, enterprise applications, and cloud solutions that accelerate business transformation.Read More About Seasia Infotech
★4.8
“Exceptional Application Services for Health Business App Development”
Suffescom Solutions Inc. combines state-of-the-art technologies to drive new values and unlock unexplored client opportunities. We promise to deliver promising technology that ensures to rewire the global economy for shared notes. Join our forward-thinking doers to shape new values in your industry.Read More About Suffescom Solutions Inc.
Finding the right app development team can be challenging when you need a reliable partner that understands your business goals. Many businesses struggle with unclear development processes, poor communication, limited technical support, and apps that fail to deliver the experience users expect. Pixel Appy helps businesses overcome these challenges with professional mobile app development company in Austin services designed around specific business needs.Read More About Pixel Appy
★5.0Reviewed 3 weeks ago
“A Smart Choice for Mobile App Development in Austin”
Meta Creative Designer offers app and website development, SEO optimization, and branding services. We build responsive platforms and craft unique identities to boost visibility and engagement for your brand.Read More About Meta Creative Designer
SemiDot is one of the top-rated IT companies in custom Mobile & Web Application development. We strongly believe in the client's first approach and we prioritize to guide our clients to develop their application in the latest technology, and in the least possible time. Our ideology is to excel in what we provide as custom services, tailored specifically for each of our client’s needs.Read More About SemiDot Infotech
★5.0
“Non-Fungible Tokens (NFT) Platform Dev for NFT Company”
Arka Softwares is an ISO 9001:2015 certified mobile app development company that develops innovative apps and digital products for startups, mid-sized industries and large enterprises. It's more than 12+ years of history in developing innovative and people-centric mobile apps for businesses worldwide. Our experienced team of developers is skilled in creating mobile apps for various platforms, including iOS, Android, and cross-platform solutions.Read More About Arka Softwares
★5.0
“The team was knowledgeable, patient, and flexible as well”
At AppexGames, We bring imagination to life through immersive, high-quality game development. Specialization in PC, mobile and console games. We create games that people love to explore. Let's build something extraordinary together!Read More About AppexGames
Encyphers is a B2B digital transformation partner providing AI, Enterprise Platforms, Web & Mobile Engineering, Digital Commerce, Cloud, Data & DevOps, and Experience & Marketing solutions to enterprises across Retail, Healthcare, SaaS, Finance, and Manufacturing.Read More About ENCYPHERS
★5.0
“Built a More Efficient and Customer Friendly Storefront”
AI-powered creative-tech agency helping startups and businesses transform their digital presence through AI automation, branding, and web development built for growth, not just aesthetics.Read More About 10turtle
★5.0
“Professional Web Design Services That Deliver Results”
Simpalm is a leading Custom Software Development in the USA, specializing in UI/UX design, mobile app development, web development, AI solutions, and SaaS platforms. With offices in Maryland, Chicago, and New York, we’ve been building transformative digital solutions for startups, established companies, and nonprofits.Read More About Simpalm
★5.0
“Smooth Native App Development with Strong Performance and User-Friendly Design”
Five Jars is a versatile digital agency specializing in web & mobile development, design, and digital strategy. With nearly a decade of experience, we’ve delivered 100+ impactful solutions, empowering mission-driven organizations and businesses across industries such as Nonprofits, Healthcare, Arts & Culture, Legal, Media, Enterprise, and Energy. Our work has reached over 300 million users, driving digital transformation through seamless UI/UX design, automation, and optimized user experiences.Read More About Five Jars
★4.9
“The team has an impressive combination of technical skills, business intelligence, and excellent communication”
Design Sparc Inc. delivers unique design and marketing services to enhance performance, increase profitability, and ensure timely, tech-driven solutions with exceptional customer support. Let’s create the perfect solution together!Read More About Design Sparc
SDLC Corp, founded in 2015 in Illinois, USA, is a full-spectrum software company with 1,200+ engineers and 3,400+ projects delivered across the USA, UK, UAE, India, Australia, Canada and other international markets. We offer AI/ML, ERP, custom software, Salesforce, cloud/DevOps, web and game development, plus AI governance and public sector AI solutions. ISO 9001, ISO 27001 and SOC 2 certified, we serve clients such as Huawei and Orange Telecom and offer 50+ proprietary products.Read More About SDLC CORP