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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8,490 Companies

List of the Best API Development & Integration Agencies

AL Master Technology
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AL Master: Leading the Digital Transformation in MENA Welcome to AL Master, an innovative IT Solutions and Consulting agency committed to achieving comprehensive digital transformation in the Middle East and North Africa (MENA). Our mission is straightforward: Excellence in Technology, Success in
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Services Provided+12 Services
3% API Development & Integration
4% Custom Web Application Development
3% E-Commerce Development
2% Mobile App Development (iOS & Android)
AI Summary
“AL Master Technology is a leading MENA IT solutions provider delivering tailored software development, web design, and digital transformation services to enhance business growth and innovation.”
Cator
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Cator is a collective of companies that specializes in bespoke software development, as well as tutoring and training services. Some examples of the software we have created include: 1. https://parcelquest.co.za/ 2. https://centtwinz.com/ 3. https://play.google.com/store/apps/details?id=com.tutling.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+11 Services
7% API Development & Integration
14% Custom Web Application Development
10% Mobile App Development (iOS & Android)
3% E-Commerce Development
AI Summary
“Cator is a consortium offering bespoke software development alongside comprehensive tutoring and training services, delivering customized digital solutions and educational support across diverse industries.”
Progressive Byte
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Progressive Byte is committed to creating cutting-edge and scalable software solutions that enable businesses to succeed in the digital era. Our skilled team specializes in custom software and mobile application development, providing personalized solutions to suit your specific requirements. We emp
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+3 Services
10% Custom Web Application Development
9% Mobile App Development (iOS & Android)
4% API Development & Integration
2% E-Commerce Development
AI Summary
“Progressive Byte delivers custom software and mobile application development, focusing on quality, user experience, and scalable solutions that drive business growth and digital success.”
Xlearate
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Xlearate is a digital innovation and AI agency established in 2025, designed to propel businesses into the digital era through advanced technology, exceptional creativity, and intelligent automation. We unite developers, designers, AI experts, and marketing strategists under one roof, all focused on
Highlights
2-9
Employees
Services Provided+9 Services
11% Mobile App Development (iOS & Android)
7% API Development & Integration
7% SaaS Product Development
8% Custom Web Application Development
AI Summary
“Xlearate is a digital innovation and AI agency delivering comprehensive services including app development, AI solutions, design, and marketing to drive measurable business growth globally.”
ShreVin Solutions
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At ShreVin Solutions, we develop customized digital and branding solutions designed to help businesses thrive in a rapidly changing technological environment. As a comprehensive IT service provider, we focus on development platforms like Shopify, WordPress, Magento, and Laravel, delivering everythin
Highlights
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
10% Custom Web Application Development
4% API Development & Integration
6% E-Commerce Development
10% ERP Consulting and SI
AI Summary
“ShreVin Solutions offers customized digital and branding services, including eCommerce, web development, UI/UX design, and strategic branding using platforms like Shopify, WordPress, Magento, and Laravel.”
Tech Vanta LLC
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Tech Vanta LLC is dedicated to creating and developing scalable SaaS platforms, tailored CRM and ERP systems, and business automation software for emerging and expanding businesses. Our emphasis is on addressing operational inefficiencies through systematic design and effective engineering. 🔹 Our O
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
St. Petersburg, Florida, Us
Services Provided+9 Services
11% SaaS Product Development
6% Custom Web Application Development
4% API Development & Integration
4% Backend Development
AI Summary
“Tech Vanta LLC develops scalable SaaS platforms, CRM, ERP, and automation software focused on operational efficiency, cloud-based backend, and tailored digital solutions for startups and SMEs.”
NOXU Solutions
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NOXU is committed to helping you achieve your business objectives like never before. Established in 2020, we are a certified software development and consulting company. With over two years of experience, we consistently provide modern technological solutions, enabling our clients to excel in their
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+14 Services
5% Frontend Development
5% Backend Development
8% Custom Web Application Development
5% API Development & Integration
AI Summary
“NOXU Solutions specializes in software development, UX/UI design, and cloud migrations, leveraging modern technologies to deliver tailored business solutions through a skilled multidisciplinary team.”
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Project023 DJVD
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At Project 023, we are committed to transforming the IT and technology solutions landscape. Our primary goal is to empower businesses through cutting-edge technology by utilizing AI, analytics, and database management to enhance growth and efficiency. We excel in developing customized web and app so
Highlights
$5,000+
Min Project Size
10-49
Employees
Services Provided+8 Services
5% API Development & Integration
11% Custom Web Application Development
9% Mobile App Development (iOS & Android)
6% Other IT Consulting and SI
AI Summary
“Project023 DJVD specializes in AI-driven IT solutions, offering customized web and app development, IT management, and consulting to enhance business growth and digital transformation.”
Madhava Creation
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Madhava Creation is a performance-oriented digital marketing and technology agency focused on growing brands in today’s digital landscape. We connect impactful creative storytelling with strong technical implementation. Unlike conventional agencies that only aim for "engagement," we utilize our exte
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Mumbai, Maharashtra, In
Services Provided+14 Services
9% Custom Web Application Development
4% API Development & Integration
2% E-Commerce Development
4% Logo Design
AI Summary
“Madhava Creation is a digital marketing and technology agency delivering data-driven strategies, performance web development, and creative assets to build scalable, secure, and high-impact brand digital presences.”
Digital Express Technologies
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Digital Express Technologies streamlines your journey to success. With more than a decade of experience in India, we achieve results by merging tailored automation solutions with innovative strategies. Our Services Include: ✅ Marketing Automation & CRM ✅ Website & App Development ✅ Search Engine Opt
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+6 Services
12% Mobile App Development (iOS & Android)
14% Custom Web Application Development
5% E-Commerce Development
3% API Development & Integration
AI Summary
“Digital Express Technologies delivers tailored automation, digital marketing, and development services in India, enabling effective scaling through marketing automation, SEO, app development, and social media strategies.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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