DesignRush expert analysts recognized the top software development companies in Washington that create high-performance solutions for businesses of all sizes and across industries. Find the right software development partner based on average project cost, reviews and more.

Best Washington Software Development Firm Rankings

5 Companies - Rankings updated: August 30, 2026

Each agency listed on DesignRush is assessed for industry expertise and customer testimonials are evaluated in order to provide you with a vetted selection. Certain listings represent paid partnerships.

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  • AutomateNexus

    Custom AI Agents & Automation for SMBs

    Veteran-owned AI automation agency offering full-stack services: AI agents, workflow automation, web development, SEO, digital marketing, CRM/Salesforce consulting, cybersecurity & self-hosted solutions. BYOK pricing from $2,500 clients own everything. No subscriptions...

    Top Services:

    • AI Development
    • Software Development
    • CRM Consulting
    • Web Development
    • Cybersecurity
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed

    AutomateNexus Services

    • AI Development
    • Software Development
    • CRM Consulting
    • Web Development
    • Cybersecurity
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Curated Travel For You
    • KourtLit
    • Techflow
    Data sourced from the agency's DesignRush profile

    AutomateNexus Reviews & Testimonials

    • Jarrell A. Green, MBA-DA
      Jarrell A. Green, MBA-DA CEO-FOUNDER at KourtLit, Inc.
      5.0 ★

      Small Businesses Website Development Review from Jarrell A. Green, MBA-DA

      AutomateNexus built our entire e-commerce website for KourtLit from scratch. We sell portable pickleball court LED projectors and needed a professional storefront that could handle orders, inventory, and customer communication. They delivered a modern, mobile-friendly site with a smooth checkout flow, backend database for order and inventory management, and automated email sequences for order confirmations, shipping updates, and follow-ups. They also set up our SEO foundation so we're positioned to rank for product searches. What stood out was their BYOK approach we own everything they built. No recurring platform fees, no vendor lock-in. They finished the entire project in July 2025 and handed it off with full documentation and training. If you need an e-commerce site built fast and built right, these are the people to call.

    • Arionne Patterson M.S.
      Arionne Patterson M.S. Owner at Curated Travel For You
      5.0 ★

      AI Development Review from Arionne Patterson M.S.

      We hired AutomateNexus to build a new website for our boutique travel agency, and they delivered far more than we expected. Erin and the team built us a custom website, client portal, and admin dashboard from scratch plus set up automations that completely changed how we run the business. Before working with them, we were drowning in manual tasks: sending confirmations, chasing documents, following up with leads. Now most of that runs automatically. The client portal lets our travelers access their itineraries and documents anytime, and the admin backend makes managing bookings so much easier. What impressed us most was the strategic thinking. They didn't just build what we asked for they helped us rethink our entire workflow and showed us where AI and automation could save us time. We're saving 15-20 hours a week on admin work we used to do manually. Communication was excellent throughout, delivery was on time, and the final product exceeded expectations. If you're a small business looking to modernize your operations without getting locked into expensive monthly software, I highly recommend AutomateNexus.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.5 4.5 (2)

  • AccelOne

    Accelone Advancing What's Possible

    Embark on your digital transformation journey with AccelOne's Software Development delivery model, strategically designed for optimal outcomes. Initiate your digital transformation seamlessly through our comprehensive nearshore and US-based services...

    Top Services:

    • Software Development
    • Mobile App Development
    • Blockchain
    • UI/UX Design
    • eCommerce Development
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    100 - 249
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    5 Projects Listed

    AccelOne Services

    • Software Development
    • Mobile App Development
    • Blockchain
    • UI/UX Design
    • eCommerce Development
    • Web Development
    • AI Development
    • Staff Augmentation
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • HSBC
    • Xapo
    • University of Washington
    • Pan American Energy SL
    • Cartoon Network
    Data sourced from the agency's DesignRush profile

    AccelOne Reviews & Testimonials

    • Gustavo Lemos
      Gustavo Lemos Review from Google
      5.0 ★

      Gustavo Lemos's Review Sourced from Google

      I've been working in AccelOne for several years already and it's an amazing place to work. Great people and a good variety of clients.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.2 4.2 (5)

  • Integrated IT Solutions

    Honesty - Respect & Reliability. Technology That Works for You As You.

    Integrated IT Solutions provides IT services that help businesses grow and thrive. With over 15 years of experience in software development, mobile apps, digital marketing, and custom integrations, were making the digital journey smooth and successful...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    • Digital Marketing
    • Show more
    Location
    Clarkston, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $65/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed

    Integrated IT Solutions Services

    • Software Development
    • Web Development
    • Mobile App Development
    • Digital Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Fresh Tracks Transportation
    • Delta Transportation
    • Blue Shuttle Van
    • Ride Taxi
    • Bitmaven
    • Heavenly Hands
    • A Promising Tomorrow
    • A1SC
    • Blue Birds Transportation
    • Transport Solutions
    Data sourced from the agency's DesignRush profile

    Integrated IT Solutions Reviews & Testimonials

    • Alegnta Yimam
      Alegnta Yimam Review from Google
      5.0 ★

      Alegnta Yimam's Review Sourced from Google

      Definitely recommend! Integrated has been our most reliable partner for the last five years. They designed and deployed our dispatching software from scratch, followed up, and addressed all the concerns we had. They are also handling our marketing and providing all other IT support we need. Bryan is very well-rounded and trustworthy! I wanted to give them a sixth star... but Google came up short.

    • Lauren Bo
      Lauren Bo Review from Google
      5.0 ★

      Lauren Bo's Review Sourced from Google

      I would truly recommend utilizing Integrated IT solutions. The database that they have created for my business has done wonders. The team is always ready to help whenever I reach out and guides me step by step on how to resolve any issue that may occur. I would definitely recommend!

    • Lisa Liberatore
      Lisa Liberatore Review from Google
      5.0 ★

      Lisa Liberatore's Review Sourced from Google

      Integrated IT solutions have exceeded every hope and expectation! In partnering with them to create a Web platform for my agency's 25 employees to use, not only has my workload and stress been reduced, but the platform has received raves from my employees, who love using it! I can now dedicate more time and energy towards increased growth of my agency instead of tedious paperwork. Thank you to Bryan and the whole team, they never disappoint!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    5.0 5.0 (6)

  • SlickDigital

    Propel Your Business Forward

    SlickDevs is a premier custom software development company specializing in transforming innovative ideas into robust, scalable applications. With a dedicated team of experts, we provide comprehensive solutions tailored to meet the unique needs of tech startups, mid-market companies, and enterprise...

    Top Services:

    • Mobile App Development
    • Software Development
    • Software Testing
    • Blockchain
    • IoT
    • Show more
    Location
    Bellevue, Washington
    Number of Employees
    50 - 99
    Average Hourly Rate
    $100/hr
    Portfolios Count
    5 Projects Listed

    SlickDigital Services

    • Mobile App Development
    • Software Development
    • Software Testing
    • Blockchain
    • IoT
    • Staff Augmentation
    • Cloud Consulting
    • Web Development
    • WordPress Website Design
    • UI/UX Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Oracle
    • Snap Inc.
    • Amazon
    • Palo Alto Networks
    • Airbnb
    • Miami-Dade County
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Smashing Ideas

    Driving Digital Impact, Powered by Motivational UX.

    Smashing Ideas, founded in 1996, is a Seattle-based design and innovation agency partnering with Global 500 companies. With expertise in smart products and digital experiences, their unique Motivational UX process accelerates transformation and enhances user engagement...

    Top Services:

    • Software Development
    • Product Design
    • UI/UX Design
    • Big Data Analytics
    • Cloud Consulting
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    50 - 99
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    1 Project Listed

    Smashing Ideas Services

    • Software Development
    • Product Design
    • UI/UX Design
    • Big Data Analytics
    • Cloud Consulting
    • Mobile App Development
    • VR/AR
    • Web Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Johnson Controls
    • Philips
    • ReachNow
    • Sony Pictures Television
    • Penguin Random House
    • GE
    • Microsoft
    • Mattel
    • Panasonic Avionics
    • University of Washington
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    5.0 5.0 (4)

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