Our industry experts evaluated and ranked the best custom software development companies in NYC that build effective solutions for clients across industries. Use the filter to find the best fit for your needs and benefit from these companies’ technical expertise.
Best New York City Software Development Firm Rankings
6 Companies-Rankings updated: August 21, 2026
All agencies are evaluated on DesignRush for demonstrated expertise and authentic client reviews to support your decision. Certain placements are paid.
Your business faces unique challenges. Let's work together to create a custom mobile app or web solution to meet those challenges head-on...
Location
New York City, New York
Number of Employees
250 - 499
Average Hourly Rate
$35/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
8 Projects Listed
Zco Corporation Services
Mobile App Development
Software Development
Staff Augmentation
IoT
AI Development
UI/UX Design
Web Development
Software Testing
VR/AR
Wearables
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Volkswagen
Harvard University
BBC America
Verizon
Liberty Mutual
Microsoft
Samsung
Eversource
APR Energy
Dartmouth College
Data sourced from the agency's DesignRush profile
Zco Corporation Reviews & Testimonials
Mark Gratiot Director of R&D at Streamline Automation
5.0★
Cross-Platform Review from Mark Gratiot
In addition to building out a native remote inspection app for iPads, Zco concurrently ported the software to a Xamarin platform for Windows users. Zco has released nine major iterations of the iPad app, each available in the App Store, as well as the initial version of the cross-platform Xamarin build. Their nimble team boasts a wide breadth of skills to match any given situation. Having clear documentation upfront has reduced onboarding time.
Katie Matter Project Manager at Southwestern Advantage
5.0★
Mobile App Development Review from Katie Matter
Zco Corporation provided full-stack mobile app development to an educational resource retail organization. They worked in Unity to build a cross-platform resource for users to advance through various curricula. The app has successfully been moved into preproduction and the second phase of development, completely satisfying project stakeholders with the quality of both its designs and functionality. The Zco Corporation team is highly creative and collaborative throughout their work.
J. Michael Webb CEO at CheckMySpot
5.0★
Startup Review from J. Michael Webb
J. Michael Webb from CheckMySpot chose Zco Corporation for app development due to its expertise. Zco adeptly developed a hybrid mobile teledermatology platform and an admin website, demonstrating excellent communication, responsiveness, and innovation. Despite the project's evolving and innovative nature, Zco seamlessly integrated Webb's intent and met all challenges, leaving him with no suggestions for improvement. (Verified via email/call)
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
The Leading Niche provides comprehensive professional services
The Leading Niche provides comprehensive professional services to federal, civilian, defense, and commercial clients in domestic and international markets. Our personnel deliver large business capabilities using a small business/high-touch approach. We provide an uncompromising commitment to “Customer...
Location
New York City, New York
Number of Employees
50 - 99
Average Hourly Rate
$250/hr
The Leading Niche Services
Software Development
Digital Services
Creative Services
AI Development
Big Data Analytics
Public Relations
Managed Services
HR Outsourcing
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
We have been building software since 2004 before most AI tools existed. That history means we know which AI implementations actually work in production and which ones only work in a demo. We bring 20 years of engineering discipline to every AI project...
Location
New York City, New York
Number of Employees
100 - 249
Neurony Services
SEO
Software Development
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Build and deliver custom, scalable and extensible software
Deyel is a no-code/LOW-CODE application platform that allows you to craft mobile and web apps effortlessly while streamlining the development process. Enjoy faster, safer, and more cost-effective processes, accelerating development by 3x. This versatile platform simplifies application development with a...
Location
New York City, New York
Number of Employees
50 - 99
Average Hourly Rate
$45/hr
Minimal Budget
$1,000 - $10,000
Deyel Low-Code Platform Services
Mobile App Development
Software Development
AI Development
IT Services
CRM Consulting
Staff Augmentation
Web Design
UI/UX Design
Web Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts