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
4 Companies-Rankings updated: September 04, 2026
DesignRush assesses agencies using expertise standards and verified client experiences to help you make better decisions. Certain agencies have paid placements.
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
Odezzi Services
Software Development
IT Services
AI Development
Big Data Analytics
Cloud Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Software & IT Services Industry
AI Industry
Finance Industry
Legal Industry
Corporate Services
Education Industry
Data sourced from the agency's DesignRush profile
Odezzi Reviews & Testimonials
Robin Kerns
Owner at CivicMix
5.0★
Software Development Review from Robin Kerns
The team at Odezzi helped turn our unique, industry leading idea into reality! Very professional to work with and made sure we as a start up, had the support needed to execute the vision.
Reviews verified by DesignRush and sourced from the agency's profile
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Stress-Free Website Development, Maintenance, Logo Design, Copywriting Services.
STL Website Development specializes in minimalistic website development, maintenance, logo design, and copywriting services, ensuring a professional touch in every project. The agency's approach prioritizes collaboration and creativity. As such, STL Website Development brings the client's vision to life while...
Top Services:
Web Development
WordPress Website Design
Web Design
eCommerce Development
Logo Design
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Location
St. Louis, Missouri
Number of Employees
Under 49
Minimal Budget
$1,000 - $10,000
Portfolios Count
15 Projects Listed
STL Website Development Services
Web Development
WordPress Website Design
Web Design
eCommerce Development
Logo Design
Software Development
IT Services
Cybersecurity
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
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
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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
Grant Thornton Services
Accounting
Business Consulting
Market Research
HR Outsourcing
Software Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Financial industry
Real estate industry
Media and Entertainment industry
Data sourced from the agency's DesignRush profile
Grant Thornton Reviews & Testimonials
Theodore Mall
Review from Google
4.0★
Theodore Mall's Review Sourced from Google
One of the world’s leading organizations of independent audit, tax and advisory firms. Grant Thornton has revenues in excess of $1.9 billion and operates more than 50 offices.
Reviews verified by DesignRush and sourced from the agency's profile
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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
Paradigm Services
Digital Marketing
Branding
Web Development
Software Development
Web Design
Print Design
Graphic Design
Mobile App Development
Content Marketing
SEO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Paradigm has been great to work with on our website project. With all the customization our site needed, Paradigm always had a solution for us. Would not hesitate at all to give Paradigm any projects!
Bob Jenkins
Review from Google
5.0★
Bob Jenkins's Review Sourced from Google
We chose PNMG to develop our website in 2018 and have been with them ever since! They are very conscientious of their work and the quality of the employees are top notch, not to mention the great support they add. We have monthly meetings to keep everything current and are very pleased we chose them to partner with!
Kristin Seymour MSN, RN, AHCNS-BC
Review from Google
5.0★
Kristin Seymour MSN, RN, AHCNS-BC's Review Sourced from Google
Paradigm New Media Group is the best in St. Louis for producing digital media. They are professional, responsive, & creative. Paradigm improved the navigation of my website and set up an e-commerce account that is user friendly. Paradigm delivers high-caliber digital media, and stayed within my budget- that is huge! Thanks guys!
Reviews verified by DesignRush and sourced from the agency's profile
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