We’ve researched and ranked the leading software companies in St. Louis helping businesses digitalize their processes, improve productivity and performance. Scroll down to the table to preview their rates, reviews, portfolios and awards and select the most appropriate partner for your needs.

Best St. Louis Software Development Firm Rankings

19 Companies-Rankings updated: September 03, 2026

DesignRush vets all agencies based on professional qualifications and verified customer feedback to help you choose confidently. Some featured agencies maintain paid sponsorships.

United States × Missouri × St. Louis × Sort by: Top Rated ×Clear Filters
  • Custom tech designed to drive your business forward

    Custom tech designed to drive your business forward

    Odezzi builds custom automation, AI, and software systems that turn messy processes into reliable workflows. Drawing on experience in data-heavy, regulated industries, we use modern cloud platforms to deliver maintainable tech stacks built for long-term growth...

    Top Services:

    • Software Development
    • IT Services
    • AI Development
    • Big Data Analytics
    • Cloud Consulting
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    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $110/hr
    Minimal Budget
    $10,000 - $25,000
  • Strategy, Innovation, Growth

    Strategy, Innovation, Growth

    Technology partners in the development and implementation of automated solutions on mobile and web platforms leading to digital transformation and sustainable growth...

    Top Services:

    • Web Development
    • eCommerce Development
    • Software Development
    • Mobile App Development
    • Big Data Analytics
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
  • World Famous IT Services for Businesses

    World Famous IT Services for Businesses

    Accenture is a renowned worldwide IT services company that excels in digital, cloud, and security solutions. With an extensive range of expertise across over 40 industries, we provide a comprehensive suite of services including Strategy and Consulting, Outsourcing, Interactive, Technology, IoT, and...

    Top Services:

    • Software Development
    • Cybersecurity
    • IT Services
    • IoT
    • Big Data Analytics
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    1000 & Up
    Portfolios Count
    4 Projects Listed
  • Sketch Development Services

    VerifiedVerified by the DesignRush team for authenticity and credibility.
    Build it. Run it. Own it.

    Build it. Run it. Own it.

    Sketch delivers AI-enabled custom software and DevOps via a subscription model with two-week delivery cycles, citing zero missed deadlines. Its team serves Fortune 500 clients and is best suited for product teams needing a transparent, agile dev partner without long-term contracts...

    Top Services:

    • Software Development
    • Cloud Consulting
    • UI/UX Design
    • eCommerce Development
    • DevOps Consulting
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Minimal Budget
    $50,000 & Up
  • Transforming the Way You Reach Customers

    Transforming the Way You Reach Customers

    VIVIDSITES is a long-standing, full-service digital marketing agency dedicated to innovation and providing exceptional service. With our ability to build custom or third-party software solutions at an affordable price point, we ensure organizations get the most out of their investment...

    Top Services:

    • Web Design
    • Web Development
    • eCommerce Development
    • UI/UX Design
    • Mobile App Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $199/hr
    Minimal Budget
    $1,000 - $10,000
  • Experience, expertise, speed, agility, and a dose of pragmatism to drive your business forward!

    Experience, expertise, speed, agility, and a dose of pragmatism to drive your business forward!

    We help you imagine, create, engineer and run digital solutions that transform how you connect with your customers and grow your business. Through our digital consulting services, we partner with you to iterate and build digital solutions that bring you faster speed-to-market capabilities and stronger...

    Top Services:

    • Managed Services
    • DevOps Consulting
    • Big Data Analytics
    • IT Services
    • Cybersecurity
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    Location
    St. Louis, Missouri
    Number of Employees
    1000 & Up
  • Empowering Your Accounting Decisions.

    Empowering Your Accounting Decisions.

    Crowe LLP is a global accounting firm offering audit, tax, advisory, and consulting services. With deep industry expertise, we empower businesses to make informed decisions for lasting value. Recognized as a top workplace, we leverage our partnership with Crowe Global to provide comprehensive solutions...

    Top Services:

    • Accounting
    • HR Outsourcing
    • Business Consulting
    • Market Research
    • BPO
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    Location
    St. Louis, Missouri
    Number of Employees
    1000 & Up
  • The Agency for Ambitious Brands

    The Agency for Ambitious Brands

    Paradigm is a full-service marketing agency helping brands grow with confidence through branding, digital marketing, and web design. For 30 years, we've crafted powerful stories, built authentic connections, and delivered results that move brands forward...

    Top Services:

    • Digital Marketing
    • Branding
    • Web Development
    • Software Development
    • Web Design
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    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $180/hr
    Minimal Budget
    $1,000 - $10,000
  • Taking Your Digital Strategy from Concept to Creation

    Taking Your Digital Strategy from Concept to Creation

    SteadyRain assists clients in crafting innovative, remunerative digital strategies through an extensive suite of services. Our team is highly qualified in consultancy, planning, website and mobile app design and construction, as well as online marketing and other related areas...

    Top Services:

    • Digital Marketing
    • SEO
    • PPC
    • Software Development
    • Mobile App Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
  • Premier and award wining internet marketing solutions provider!

    Premier and award wining internet marketing solutions provider!

    Altec Design has been delivering robust internet solutions to leading companies in St. Louis Mo since 2004. Unlike large companies that offer generic solutions, we believe in crafting customized products and services tailored to meet your unique requirements...

    Top Services:

    • Web Design
    • Web Development
    • Software Development
    • PPC
    • SEO
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $1,000 - $10,000
  • Innovate. Modernize. Ocelot.

    Innovate. Modernize. Ocelot.

    Ocelot Consulting specializes in Cloud technologies, custom application development and enterprise IT security...

    Top Services:

    • Mobile App Development
    • Software Development
    • IT Services
    • Digital Marketing
    • Cybersecurity
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
  • Startup Minds, Innovative Solutions” Helping Enterprises Turn Ideas into Digitally Transformative Solutions...

    Top Services:

    • Mobile App Development
    • Software Development
    • AI Development
    • IT Services
    • Cloud Consulting
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    100 - 249
  • Products + Advisors + Ventures

    Products + Advisors + Ventures

    Parux is a digital product studio that helps startups and scale-ups design, develop and launch high-impact digital products and ventures...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • Web Design
    • Branding
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $199/hr
    Minimal Budget
    $25,000 - $50,000
  • Bridging the Gap between people and Technology

    Bridging the Gap between people and Technology

    Alambda Systems has had the pleasure of collaborating with customers and partners from across the world on projects of varying size and complexity. In all of our work, we blend curiosity and originality with a deep understanding of what it takes to make everything function and function exceptionally well...

    Top Services:

    • AI Development
    • Software Development
    • IT Services
    • Web Development
    • eCommerce Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $125/hr
    Portfolios Count
    1 Project Listed
  • IT, Business, BPO, Audit, Tax and Advisory are just the beginning.

    IT, Business, BPO, Audit, Tax and Advisory are just the beginning.

    Grant Thornton LLP (US) is an IT, project management, audit, tax, AgTech, and BPO company headquartered in Chicago, Illinois with over 50 U.S. offices and access to a global network or member firms in over 135 countries. We offer a broad range of services in strategy and consulting, operations, technology and...

    Top Services:

    • Accounting
    • Business Consulting
    • Market Research
    • HR Outsourcing
    • Software Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
  • Empowering People. Transforming Businesses.

    Empowering People. Transforming Businesses.

    We help your business improve its unique processes and realize market advantages from your data by creating software and data analytics, data mining, solutions. Our software engineers design and develop new systems as well as updates or replacements for legacy systems...

    Top Services:

    • Software Development
    • Mobile App Development
    • Big Data Analytics
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
  • Software and mobile app development

    Software and mobile app development

    Since its establishment in 1999, Engage has been providing flexible, sustainable, and highly customizable web and mobile solutions, including software applications and integrations...

    Top Services:

    • Software Development
    • Web Development
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $199/hr
  • Trust your technology to the experts.

    Trust your technology to the experts.

    Unidev, founded in 1990, is a diversified IT company focused on applying technology to business. If you can dream it, we can build it...

    Top Services:

    • Web Development
    • WordPress Website Design
    • Web Design
    • Mobile App Development
    • Software Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Portfolios Count
    3 Projects Listed
  • Ecommerce Cloud Company

    Ecommerce Cloud Company

    RaiseTech is a world-class Cloud, SaaS, and E-commerce development service provider that helps businesses to transform and keep up with the constantly growing competition across various industries. With over 10 years of experience, the RaiseTech’s team of professionals knows what tools and solutions their...

    Top Services:

    • Web Development
    • Software Development
    • eCommerce Development
    • Mobile App Development
    • Show more
    Location
    St. Louis, Missouri
    Number of Employees
    Under 49
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    6 Projects Listed

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