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
3 Companies-Rankings updated: September 06, 2026
DesignRush assesses agencies using expertise standards and verified client experiences to help you make better decisions. Certain agencies have paid placements.
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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
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Location
New York City, New York
Number of Employees
Under 49
Minimal Budget
$50,000 & Up
Sketch Development Services Services
Software Development
Cloud Consulting
UI/UX Design
eCommerce Development
DevOps Consulting
Staff Augmentation
AI Development
Software Testing
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
U.S. Bank
Centene Corporation
Maritz
Change Healthcare
Stifel
Reinsurance Group of America (RGA)
bioMerieux
CareSource
CENTEGIX
Purina
Data sourced from the agency's DesignRush profile
Sketch Development Services Reviews & Testimonials
Monica
Review from Google
5.0★
Monica's Review Sourced from Google
Amazing and talented people. I’ve worked for both client and agency side and can can say their partnership is amazing. They truly care about ongoing operations and not just ending it at a project level. Highly recommend! Message me if you want specifics.
John Andesilich
Review from Google
5.0★
John Andesilich's Review Sourced from Google
I own a marketing firm in Troy MO and I recently met with Calvin at Sketch Development Services to discuss a software development project I have been thinking about pursuing. He was very nice, easy to speak to and even though his field is a bit out of my knowledge base, he was able to explain things in a way that made perfect sense. I look forward to working with him and his team in the future and recommend anyone looking for a software or app development company to give them a try.
Reviews verified by DesignRush and sourced from the agency's profile
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Dont settle for off-the-shelf. Expertly crafted & custom-tailored software from the USA.
K-Optional Software: where your success is our success. From secure solutions that scale to an uncompromising focus on return on investment, we're the company that delivers. Dont settle for off-the-shelf. Expertly crafted & custom-tailored software from the USA...
Top Services:
Mobile App Development
Software Development
AI Development
Location
New York City, New York
Number of Employees
Under 49
Average Hourly Rate
$200/hr
Minimal Budget
$50,000 & Up
K-Optional Software, LLC Services
Mobile App Development
Software Development
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Viapath Technologies
AllModular Systems
Assemplify
University of Arkansas
University of Texas Austin
Flowty
RepairDispatch
Data sourced from the agency's DesignRush profile
K-Optional Software, LLC Reviews & Testimonials
Michael Levy
President at Flowty
5.0★
Software Development Review from Michael Levy
Flowty is a blockchain-based platform providing various transaction services around NFTs. K-Optional wears many hats in support of Flowty including Front End, Back End, business strategy, SEO and more.
The K-Optional team has been incredible to work with. They are proactive, supportive, smart, thoughtful and, most importantly, fit seamlessly into our team and company culture. To put it succinctly, we tried to hire them full-time...and then tried to buy their company to acqui-hire them.
Some of their strengths include: reliability, responsiveness and creativity. There are many groups out there that can perform some version of the work we are looking for. There are not many groups that are responsive at all hours of the day, deliver consistently and able to present data-backed business strategies.
Jane Smarovozova
Creative Director at McSwain
5.0★
Software Development Review from Jane Smarovozova
We collaborated with K-Optional to develop a custom inventory management dashboard tailored for real estate clients. We provided the creative vision and detailed designs, while their team focused on the software development, ensuring that every element was implemented perfectly. We worked hand-in-hand flawlessly, resulting in a sleek, user-friendly interface that not only looks great but functions seamlessly. The synergy between design and development allowed us to deliver a product that exceeded client expectations, combining aesthetics with powerful functionality.
Reviews verified by DesignRush and sourced from the agency's profile
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Toptal is a highly respected network of elite talent available when needed. Our team of problem-solvers is committed to integrity, and leading companies turn to us for critical projects. We equip organizations with the tools to compete and succeed in a rapidly-evolving business world, boasting exceptional...
Top Services:
Mobile App Development
VR/AR
Blockchain
Software Development
AI Development
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Location
New York City, New York
Number of Employees
1000 & Up
Average Hourly Rate
$149/hr
Minimal Budget
$50,000 & Up
Toptal Services
Mobile App Development
VR/AR
Blockchain
Software Development
AI Development
Web Development
eCommerce Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts