Our directory features top custom software development companies in the USA, vetted by 12 veteran experts based on a five-point ranking criteria, and supported by 5,000+ client reviews, so you can reliably find a partner for your next project. 

List of Top Software Development Firms in the US

9 Companies-Rankings updated: October 19, 2026

Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

United States × Public Administration × $10,000 - $25,000 ×Clear Filters
  • Osom Studio

    VerifiedVerified by the DesignRush team for authenticity and credibility.

    WordPress and WooCommerce development agency since 2011.

    Our strength lies in that we understand our Client's challenges of running a tech company matched with the ability to engineer a stable and robust WordPress-based websites. No matter how niche and hard-to-explain your product is, we'll hop on your wagon and help you put your message across...

    Top Services:

    • WordPress Website Design
    • Web Development
    • eCommerce Development
    • Software Development
    • Web Design
    • Show more
    Location
    Miami, Florida
    Number of Employees
    Under 49
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    17 Projects Listed

    Osom Studio Services

    • WordPress Website Design
    • Web Development
    • eCommerce Development
    • Software Development
    • Web Design
    • IT Compliance Solution
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Vivitek
    • Apogee Electronics
    • Qoolize
    • Filestage.io
    • 3D Connexion
    • Kontakt.io
    • eurobank
    • Vromo
    • Kodak Alaris
    • IKEA
    Data sourced from the agency's DesignRush profile

    Osom Studio Reviews & Testimonials

    • Sarah Bumbarger
      Sarah Bumbarger Director of Global Communications at DT Global
      5.0★

      WordPress Review from Sarah Bumbarger

      Osom Studio provided website maintenance for our company website and was excellent to work with. Our website was a legacy Wordpress website that was difficult to work with and had many issues. The team at Osom helped us to resolve issues and kept the website running steadily. They communicated clearly and responded quickly if any issues came up, and their work quality was excellent. I would highly recommend working with them, especially for any company that has a legacy site that needs support. Thank you Osom!

    • Sascha Kienitz
      Sascha Kienitz CEO at Optris
      4.2★

      WordPress Website Design Review from Sascha Kienitz

      We build thermal imaging hardware, so our website is a product catalogue and it has to work flawlessly for our clients and distributors. For a long time the technical side of it was our weak point: changes were made directly on the live site, things broke, and nobody on our team could explain how the integrations actually worked. What we needed was not more marketing. We needed WordPress experts who treat the technical layer as the main job. That is the clearest difference I see between Osom Studio and the agencies we have worked with: with a marketing agency, development is something they also do, and the quality of it drifts over time. With Osom Studio their engineering is excellent. They started with a security and stabilisation audit, worked through it in a fixed number of hours, and reported against it. They test in a separate environment instead of on our live site, which sounds obvious and had not been our reality before. We have since moved the whole technical implementation of our websites to them.

    • Marco Mancini
      Marco Mancini Marketing Specialist at GLOBALNETWORKS
      5.0★

      WordPress Review from Marco Mancini

      We have been working closely with OSOM for a few months now to improve various aspects of our website. They are a very professional, efficient and friendly team. They always understand what we want and carry it out with precision. I highly recommend working with them.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Transforming Enterprises with AI Applications

    ThirdEye Data Transforms Enterprises with Data & AI Solutions & Services. ThirdEye Data leverages Artificial Intelligence & Data technologies to build AI applications for enterprises worldwide...

    Top Services:

    • AI Development
    • Big Data Analytics
    • Software Development
    • IT Services
    • Staff Augmentation
    • Show more
    Location
    San Jose, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    23 Projects Listed

    ThirdEye Data Services

    • AI Development
    • Big Data Analytics
    • Software Development
    • IT Services
    • Staff Augmentation
    • DevOps Consulting
    • Cloud Consulting
    • Mobile App Development
    • IoT
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Microsoft Corp
    • Walmart
    • AWS
    • SCE
    • XPERI
    • Texisle
    • Glastrosch
    • British Petroleum
    • CRC
    • Google
    Data sourced from the agency's DesignRush profile

    ThirdEye Data Reviews & Testimonials

    • Matt Singer
      Matt Singer CEO at Ecotrak
      5.0★

      Big Data Analytics Review from Matt Singer

      ThirdEye helped analyzing data and recommending architecture for enhanced analytics. They understood our business needs really well and went above and beyond to deliver what we were looking for.

    • Kumar Mankala
      Kumar Mankala Former Advisor of the AI/ML Program and Products at SCE
      5.0★

      Software Development Review from Kumar Mankala

      ThirdEye developed CV ML models to automate image quality assessment for Field Asset Inspection (part of Wildfire Mitigation Program). The team delivered the models in time, was able to adapt to changing requirements.

    • Erhan Erdem
      Erhan Erdem Review from Google
      1.0★

      Erhan Erdem's Review Sourced from Google

      I did a voice study for them almost two months ago, still waiting for my payment. I contacted them multiple times and they don't even respond. What a joke.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • IT Support Designed To Scale With Your Business

    MazikUSA delivers tailored onsite and offsite IT support, staff augmentation, and end-to-end technology solutions designed to help organizations innovate and scale. We support clients through globally distributed delivery teams across the globe - ensuring scalable, cost-effective, and time-zone-aligned...

    Top Services:

    • Software Development
    • AI Development
    • IoT
    • IT Services
    • Cybersecurity
    • Show more
    Location
    Park Ridge, Illinois
    Number of Employees
    50 - 99
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $10,000 - $25,000

    MazikUSA Services

    • Software Development
    • AI Development
    • IoT
    • IT Services
    • Cybersecurity
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Sui Southern Gas Company Limited
    • United Energy Pakistan Limited
    • Invexal (USA)
    • Bank AlBilad (KSA
    Data sourced from the agency's DesignRush profile
  • NYC MBE: cloud, security, software, web

    NYC MBE-certified IT firm: cloud architecture, application security, custom software, and websites for SLED and commercial buyers...

    Top Services:

    • Software Development
    • AI Development
    • Cloud Consulting
    • IT Services
    • Cybersecurity
    • Show more
    Location
    New York City, New York
    Number of Employees
    Under 49
    Average Hourly Rate
    $125/hr
    Minimal Budget
    $10,000 - $25,000

    IT Custom Solution LLC Services

    • Software Development
    • AI Development
    • Cloud Consulting
    • IT Services
    • Cybersecurity
    • Staff Augmentation
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • City of Springfield, MO
    • Rensselaer County, NY
    • GovBid AI by IT Custom Solution LLC
    Data sourced from the agency's DesignRush profile
  • We are a software design & development company.

    We solve problems through purpose-built apps, websites, and platforms. We're experienced in UI/UX design, website development, desktop and mobile app development, APIs, generative AI solutions, and cloud services. Our UI design and software development experts work with your team to achieve your business...

    Top Services:

    • AI Development
    • Mobile App Development
    • Software Development
    • Web Design
    • UI/UX Design
    • Show more
    Location
    King of Prussia, Pennsylvania
    Number of Employees
    Under 49
    Average Hourly Rate
    $135/hr
    Minimal Budget
    $10,000 - $25,000

    Fynydd LLC Services

    • AI Development
    • Mobile App Development
    • Software Development
    • Web Design
    • UI/UX Design
    • Web Development
    • eCommerce Development
    • Cloud Consulting
    • IT Services
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • U.S. Bancorp
    • Red Hat Software
    • Pfizer
    • Saint-Gobain
    • U.S. Dept. of Justice
    • Heinz
    • The Vanguard Group
    • New Relic
    • Merck Sharp & Dohme
    • Philadelphia Scientific LLC
    Data sourced from the agency's DesignRush profile

    Fynydd LLC Reviews & Testimonials

    • David Sonn
      David Sonn Review from Google
      5.0★

      David Sonn's Review Sourced from Google

      Fynydd is a team of very talented problem solvers, keenly skilled in delivering technology solutions. We flat out trust them. The applications, websites, and software they build are rock solid. And, they stand behind their work. In a world where the codebase could be faulty and you wouldn't even know it until it's far too late, Fynydd is the choice that brings peace of mind. #BeyondJustCoders

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Mobile & Web Apps Dev

    Lithios was established in 2014 with the goal of developing mobile experiences and products that have a significant impact on our community by a group of enthusiastic NCSU entrepreneurs...

    Top Services:

    • Mobile App Development
    • Software Development
    • VR/AR
    • Web Development
    • UI/UX Design
    • Show more
    Location
    Raleigh , North Carolina
    Number of Employees
    Under 49
    Average Hourly Rate
    $199/hr
    Minimal Budget
    $10,000 - $25,000

    Lithios Services

    • Mobile App Development
    • Software Development
    • VR/AR
    • Web Development
    • UI/UX Design
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Draft Kings
    • Offline
    • Operation 36
    • Silbo
    • Coworks
    Data sourced from the agency's DesignRush profile

    Lithios Reviews & Testimonials

    • Brennan Barber
      Brennan Barber Review from Google
      5.0★

      Brennan Barber's Review Sourced from Google

      Great experience working with the Lithios team. They were able to dive in quickly on our project, gain a deep understanding of the product, and provide valuable insights and recommendations throughout the process. They managed expectations well and met our timelines and budget. Really couldn't have asked for a more positive working relationship!

    • Andrew Katz
      Andrew Katz Review from Google
      5.0★

      Andrew Katz's Review Sourced from Google

      Brilliant development group. We brought a high innovation project to Lithios and they immediately found the critical path to evaluate the feasibility of a complete build. We are excited to continue working together.

    • Adam Clark
      Adam Clark Review from Google
      5.0★

      Adam Clark's Review Sourced from Google

      We really enjoyed working with The Lithios Team!! They have great technical & interpersonal skills!! If you plan to create an App, Lithios is a must.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • SiegePal is a cybersecurity and AI security engineering firm focused on securing cloud-native and regulated environments. We help organizations strengthen cloud security, identity systems, compliance readiness, and application security through hands-on implementation. Unlike firms that stop at...

    Top Services:

    • Cybersecurity
    • Cloud Consulting
    • Software Development
    Location
    San Diego, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $125/hr
    Minimal Budget
    $10,000 - $25,000

    SiegePal Services

    • Cybersecurity
    • Cloud Consulting
    • Software Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Aiperion
    • Fortech Products
    • Halfcourt Marketplace
    Data sourced from the agency's DesignRush profile
  • Building High-Performing Mobile & Web Apps

    We steer top-tier brands and early-stage startups toward providing their customers with cutting-edge digital design, web, and mobile experiences...

    Top Services:

    • Mobile App Development
    • Branding
    • Software Development
    • Web Development
    • AI Development
    • Show more
    Location
    Arlington, Virginia
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $10,000 - $25,000

    Unstuck Labs Services

    • Mobile App Development
    • Branding
    • Software Development
    • Web Development
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Rooam
    • Traxyl
    • Visajump
    • MyBuzz
    • iEatz
    Data sourced from the agency's DesignRush profile

    Unstuck Labs Reviews & Testimonials

    • Seth Banks
      Seth Banks Review from Google
      5.0★

      Seth Banks's Review Sourced from Google

      Amazing group of advisors and experts. Was invited from a friend to attend an event and the value walking away was tremendous. Thanks Unstuck Labs!

    • Ximena Segovia
      Ximena Segovia Review from Google
      5.0★

      Ximena Segovia's Review Sourced from Google

      Unstuck Labs team has been so professional on our interactions, especially during their Unstuck Tuesdays sessions! Feels like chatting with friends who happen to be total pros. 🙌🏼 Their advice was spot-on and totally helped me on my project!!If you want to experience their awesome vibe, I highly recommend joining their Tuesday sessions! You won't be disappointed 😊

    • Fahd Malik
      Fahd Malik Review from Google
      5.0★

      Fahd Malik's Review Sourced from Google

      Really easy to talk to and work along with. Helped me develop and scale a web application. Team is responsive and able to provide deliverables on a timely manner.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Transforming Enterprise Operations with Agentic AI

    CogniAI helps commercial organizations and Government modernize operations through Agentic AI, intelligent automation, data engineering, geospatial intelligence, and enterprise AI platforms. Our expertise spans AI workflow orchestration, digital twins, data modernization, and secure AI solutions that improve...

    Top Services:

    • AI Development
    • Big Data Analytics
    • IT Services
    • CRM Consulting
    • ERP Consulting
    • Show more
    Location
    Leesburg, Virginia
    Number of Employees
    100 - 249
    Average Hourly Rate
    $80/hr
    Minimal Budget
    $10,000 - $25,000

    CogniAI Inc Services

    • AI Development
    • Big Data Analytics
    • IT Services
    • CRM Consulting
    • ERP Consulting
    • DevOps Consulting
    • Managed Services
    • Cloud Consulting
    • Software Development
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • NC Pain Management
    • Federal Communications Commission
    • Federal Trade commission
    Data sourced from the agency's DesignRush profile

Why companies trust DesignRush

Every agency is independently vetted before it can be listed or ranked

1

Identity Check

We verify businesses and reviewer LinkedIn profiles for integrity.

Agencies vetted
128,556+
2

Portfolio Review

We review agency work, case studies, and results to confirm skill.

Applicants rejected
48%
3

Ongoing Audit

We monitor listings regularly; outdated agencies are removed.

Agencies verified
9

Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.

See how rankings and monetization work.

FAQs About Software Development Companies in the USA

What services do software development companies in the USA provide?

They typically offer full-cycle software, mobile, and web development, UI/UX design, and cloud and development operations (DevOps) as part of their core services. Some companies also provide AI development and digital transformation services to support a business’s continued growth. 

How much do custom software development services cost in the US?

Custom software development costs in the US start at $90-$160 per hour or $20,000-$500,000 per project, according to data from FullStack Labs. For more complex, enterprise-scale systems, the approximate cost is $500,000 to over $1 million per project.  

The final cost of custom software development services in the US will depend on project scope, complexity, and integration and regulatory requirements. 

What is the typical timeframe for custom software development services?

They can take 8-12 weeks for basic MVP development and over 3 years for production-ready enterprise builds. Estimated custom software solution timelines according to Goji Labs:  

  • Small builds: 8-12 weeks for MVPs and 12-24 weeks for full product release 
  • Mid-sized builds: 8-16 weeks for MVPs and 16-40 weeks for complete products 
  • Large builds: 12-36 weeks for MVPs and 36-144 weeks for fully deployable products 

What processes and performance benchmarks do top US software companies follow to ensure quality software?

To ensure quality solutions, leading software development companies in the USA perform code reviews, automated checks, clear documentation, and reproducible deployment environments. For instance, reputable companies aim for less than 2% defects before production and 99.5% uptime for system maintenance based on data from Shakuro and BlueGrid.io. 

How do I check whether a US software development company can handle a company my size?

Primarily, look for case studies that name the client and the person who signed off. Vague, anonymized case studies hide the exact details you need to judge whether a vendor has handled a business like yours.

A good example of this in practice is Designli, which publishes named stories, including work for a mid-market firm with around $100 million in annual revenue.

What are the best software development companies in the USA?