Top API Development & Integration Firms

API development and integration firms build the interfaces that let software talk to other software, and wire up the ones that already exist. Work ranges from designing REST, GraphQL or gRPC APIs for a product or partner program to connecting payment gateways, CRMs, ERPs, shipping carriers, messaging platforms and banking or healthcare systems through their published APIs. Companies hire for it when staff retype data between two systems, when partners want programmatic access, or when a monolith is being split into services.

Compare firms here on the systems they have integrated before, the documentation they hand over, and how they handle authentication, versioning and outages when a third-party API fails.

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We evaluate companies on verified profile data: services, pricing, locations, and portfolio. Client reviews are being collected. We may earn a fee for some placements. How we rank and verify

8,490 Companies

List of the Best API Development & Integration Agencies

Fibertide
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Fibertide assists organizations in creating and managing extensive cloud systems. We enable businesses to enhance their software scalability, cost-effectiveness, and availability through cloud services such as AWS and Google Cloud. With our foundation in computer science and extensive technical expe
Highlights
$50,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Wroclaw-Psie Pole, Pl
Services Provided+3 Services
20% Cloud Consulting & SI
13% Other IT Consulting and SI
23% Site Reliability Engineering (SRE)
5% Managed IT Services
AI Summary
“Fibertide specializes in designing and managing scalable, cost-effective cloud infrastructures using AWS and Google Cloud, enhancing developer efficiency and service reliability through expert Site Reliability Engineering.”
Wavestek
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WavesTek is a reputable Managed IT Services Provider (MSP) established in 2009, offering dependable, secure, and scalable IT solutions to small and mid-sized businesses throughout the United States. With more than 15 years of experience and a 100% client retention rate, our goal is to cultivate long
Highlights
$100-149/hr
Avg Hourly Rate
2-9
Employees
New York, New York, Us
Services Provided+2 Services
14% Custom Web Application Development
20% API Development & Integration
20% Other IT Consulting and SI
10% Cloud Consulting & SI
AI Summary
“WavesTek is a trusted MSP delivering comprehensive IT services, including cybersecurity, cloud solutions, infrastructure management, and support, empowering small and mid-sized US businesses with secure, scalable technology.”
Singular Agency
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Nearshore Software Development & Agile Solutions | Over 40 Active Clients Are you in search of a proficient and experienced development team? Considering outsourcing your software development from concept to completion? Tap into Our Expert Talent Our Approach: Accuracy and Flexibility Complete Tech
Highlights
$25,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Miami, Florida, Us
Services Provided
15% Mobile App Development (iOS & Android)
25% Custom Web Application Development
10% API Development & Integration
50% AI Strategy & Roadmap Consulting
AI Summary
“Singular Agency delivers flexible nearshore software development, AI consulting, and custom technology solutions across industries, combining expertise in mobile, web, and automation for client success.”
iTRENDS
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At iTrends, we view our customers as long-term partners with whom we can evolve together. This is why we create web systems, mobile applications, websites, and digital strategies aimed at achieving results. Our solutions are user-friendly, modern, and highly optimized, all designed to enhance the va
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided
13% API Development & Integration
25% Mobile App Development (iOS & Android)
12% Custom Web Application Development
50% IT Staff Augmentation
AI Summary
“iTrends develops user-friendly web systems, mobile apps, websites, and digital strategies focused on delivering optimized, modern solutions that enhance product and service value for long-term partners.”
Inside & Out Digital
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Inside & Out is a comprehensive web and app development firm that provides high-performance digital solutions for businesses looking for more than just a website. We focus on custom web development, SaaS platforms, and API-driven solutions to help businesses enhance their operations, boost customer
Highlights
2-9
Employees
Services Provided+2 Services
30% Custom Web Application Development
15% Mobile App Development (iOS & Android)
10% E-Commerce Development
20% API Development & Integration
AI Summary
“Inside & Out Digital specializes in custom web and app development, offering scalable SaaS, API integrations, and high-performance solutions tailored to diverse industries and business needs.”
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Jay Software Solutions Ltd
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We are an enthusiastic app development firm that combines the inventive spirit of freelancers with the robust capabilities of a committed team. Whether working with startups or large corporations, we assist businesses in turning their concepts into high-performing mobile apps featuring elegant UI/UX
Highlights
2-9
Employees
Services Provided
40% Mobile App Development (iOS & Android)
20% API Development & Integration
20% Software Development Services
20% Product UX Strategy
AI Summary
“Jay Software Solutions Ltd excels in Mobile App Development and API Development, providing scalable and high-performing software solutions that meet diverse business needs with robust architecture and innovative technologies.”
Dtech Development Inc
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At Dtech Development Inc., we utilize more than 12 years of experience to provide innovative web and mobile app development solutions. Our multilingual team, operating on a global scale, is skilled at creating customized software that meets the varied requirements of our clients. We focus on tailore
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided
20% API Development & Integration
10% E-Commerce Development
40% Mobile App Development (iOS & Android)
30% Custom Web Application Development
AI Summary
“Dtech Development Inc. delivers tailored web and mobile applications, graphic design, and branding services globally, leveraging 12+ years of expertise to create scalable, user-focused solutions.”
SafeLock CyberTech Solutions
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Contact Information: Website: www.safelocktech.com Email: info@safelocktech.com Mobile Number: +91 9923109816 SafeLock CyberTech focuses on cybersecurity, software development, and related IT services, prioritizing a "security first" approach. Their offerings include: - **Cybersecurity solutio
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided
40% Cybersecurity Services
20% API Development & Integration
20% Software Development Services
20% Custom Web Application Development
AI Summary
“SafeLock CyberTech Solutions excels in secure custom software, API development, web applications, and legacy system modernization, showcasing their robust expertise in software development integrated with security-first principles.”
SJ DigiTech Private Limited
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SJ Digital Technologies (SJD) leads the way in the IT workforce augmentation sector. Our cutting-edge recruitment platform, backed by a customer-centric team, effectively connects the demand and supply of IT talent. Our dedication to prompt service has helped us achieve a top 5 ranking with more tha
Highlights
$100,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Hyderabad, In
Services Provided+2 Services
15% Custom Web Application Development
15% API Development & Integration
20% Backend Development
40% IT Staff Augmentation
AI Summary
“SJ DigiTech Private Limited is a leading IT workforce augmentation firm offering an innovative recruitment platform that efficiently connects IT talent with client demands, ensuring high client satisfaction.”
Cleancoders.tech
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We focus on offering comprehensive services that include website development, mobile app design and development, API development, and cloud solutions. Our team of experienced professionals has a strong history of successfully completing projects, making us well-prepared to meet your organization's t
Highlights
< $25/hr
Avg Hourly Rate
2-9
Employees
Vadodara, Gujarat, In
Services Provided+1 Services
20% API Development & Integration
18% Mobile App Development (iOS & Android)
12% Custom Web Application Development
20% AI Strategy & Roadmap Consulting
AI Summary
“Cleancoders.tech provides comprehensive technology services including website and mobile app development, API integration, and cloud solutions, leveraging experienced professionals for efficient project delivery.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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