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
5 Companies-Rankings updated: September 03, 2026
All agencies are evaluated on DesignRush for demonstrated expertise and authentic client reviews to support your decision. Certain placements are paid.
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
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Location
St. Louis, Missouri
Number of Employees
1000 & Up
Portfolios Count
4 Projects Listed
Accenture Services
Software Development
Cybersecurity
IT Services
IoT
Big Data Analytics
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Education Non-profit
Healthcare Firm
Global Apparel Retailer
Data sourced from the agency's DesignRush profile
Accenture Reviews & Testimonials
Saurabh Choudhary Senior Consultant at LTI
4.0★
Financial Review from Saurabh Choudhary
In my experience it's a good place to work and start your career with, you will get to learn a lot of things which will be quite beneficial in long run.Accenture helps clients across various industries innovate and transform their businesses. Their focus on digital technologies, such as AI, cloud, and analytics, enables them to deliver impactful solutions. Overall, Accenture's commitment to innovation and client success makes them a leading player in the consulting industry.
Rishi Kumar Sr. Servicemax and Salesforce Developer at Boston Scientific
4.7★
Salesforce Review from Rishi Kumar
I had the opportunity to work with Accenture on implementing Salesforce with ServiceMax. Their expertise and dedication were impressive. Accenture's work on implementing Salesforce and the ServiceMax managed package was invaluable, significantly benefiting our organization's operations and efficiency. However, one area for improvement would be the documentation process. It was challenging to access comprehensive documentation, which slowed down certain aspects of our project. Nonetheless, I recommend Accenture as their talented team delivers exceptional results.
William Lewis Review from Google
5.0★
William Lewis's Review Sourced from Google
ISSA monthly meeting. Great venue. Good location. Extraordinary buffet at meeting. Interesting discussions.Accenture goes the mile to support our meetings and I always enjoy working with their team. By the way the view of LA is incredible.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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
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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
Tecziq Solutions Services
Web Development
eCommerce Development
Software Development
Mobile App Development
Big Data Analytics
Staff Augmentation
AI Development
WordPress Website Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
GBiosciences
micehellenails
Nailfor
SmithAnalytical
IBoomerang
USABG
Apexhuman
Vallar
Vanloc
123Clinic
Data sourced from the agency's DesignRush profile
Tecziq Solutions Reviews & Testimonials
Tashfeen Khan Marketing manager at T7Gaming
5.0★
Software Development Review from Tashfeen Khan
We had to get an online social gambling application to be developed and after looking into the market we shortlisted Tecziq Solutions. The best part was there prior knowledge of our industry domain which was very helpful. They have a nice team and very co-operative and flexible. We found them to be very professional and top notch in terms of communication as well - quite prompt. We loved working with them and they are with us our technical partners.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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 View All Reviews
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
Crowe Services
Accounting
HR Outsourcing
Business Consulting
Market Research
BPO
Software Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Banking Industry
Food Industry
Fintech Industry
Data sourced from the agency's DesignRush profile
Crowe Reviews & Testimonials
RA Review from Google
1.0★
RA's Review Sourced from Google
As an accounting firm I would give them 1 star. I recently discovered a litany of deductions they failed to consider. You will be given an EA, which is just a glorified tax preparer. They will know nothing and be slow to reply. You might as well get your taxes done by H&R block or a proper independent CPA. If these folks do your taxes, get prepared for a larger tax bill. I strongly advise against it.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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
Perficient Services
Managed Services
DevOps Consulting
Big Data Analytics
IT Services
Cybersecurity
Software Development
AI Development
Digital Marketing
SEO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Esurance
Henry Ford Health System
Herbalife Nutrition
The Park at Wrigley
Stallion
Data sourced from the agency's DesignRush profile
Perficient Reviews & Testimonials
Rutledge Daugette Review from Google
1.0★
Rutledge Daugette's Review Sourced from Google
We had a great initial project with Ameex before they were purchased by Perficient. Post-support was slow, but acceptable, however as time went on, I stopped getting the level of communication and time itemization I was accustomed to. With Perficient taking over, things devolved pretty quickly, and despite multiple conversations with my account manager - nothing changed, even after bumping up hours to have more dedicated resources. Ultimately, I cancelled the contract this year. Disappointing because their team/work was stellar (and the development team is still solid) before, but the simple asks were continually ignored, and over time, I lost trust that I was getting the hours agreed upon.Towards the end, there was also what felt like a lot of gaslighting of my concerns, and outside of an initial project, I cannot recommend Perficient for ongoing support.Edit: I'm now bumping this to a 1 Star because I've spent the last 3 weeks digging into code and it's one questionable decision after another. Really poor.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews