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

svayambhuTech
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We focus on web applications, mobile app development, e-commerce solutions, and innovative AR/VR games. Let's turn your ideas into reality.
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
4% API Development & Integration
8% E-Commerce Development
8% Mobile App Development (iOS & Android)
6% Custom Web Application Development
AI Summary
“svayambhuTech specializes in web and mobile app development, e-commerce solutions, and AR/VR game innovation, transforming client ideas into effective digital products.”
OpCrew Tech & Services
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We are a startup focused on excellence in design, development, quality assurance, and launching. Our AI-enhanced and agile teams are prepared to quickly provide insights and results tailored to your needs, ensuring we find the perfect solution.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
9% Custom Web Application Development
6% QA & Software Testing
3% E-Commerce Development
5% Mobile App Development (iOS & Android)
AI Summary
“OpCrew Tech & Services is a startup specializing in design, development, and quality assurance, leveraging AI-driven agile teams to deliver customized, efficient technology solutions and insights.”
Byterix Tech
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Byterix Tech is your all-in-one resource for everything digital. Our enthusiastic team of specialists is committed to assisting businesses in succeeding online. We offer a wide range of services, including creating beautiful websites, launching captivating social media campaigns, and designing data-
Highlights
< $25/hr
Avg Hourly Rate
50-249
Employees
Services Provided+11 Services
6% Mobile App Development (iOS & Android)
8% Custom Web Application Development
4% API Development & Integration
2% E-Commerce Development
AI Summary
“Byterix Tech is a technology company specializing in innovative software solutions and digital services to enhance business processes and drive technological advancement across various industries.”
InterHuge
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Creamos y desarrollamos experiencias digitales que llevan la esencia de tu marca a todos los dispositivos digitales.
Highlights
2-9
Employees
Palafrugell, Catalonia, Es
Services Provided+13 Services
7% Mobile App Development (iOS & Android)
4% QA & Software Testing
7% Custom Web Application Development
2% API Development & Integration
AI Summary
“InterHuge designs and develops digital experiences that capture brand essence across multiple digital platforms, enhancing customer engagement and brand presence effectively.”
NF Tech
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We design and launch AI-driven web and mobile applications that boost engagement, conversions, and revenue. Launch your minimum viable product (MVP) in just 30 days and make adjustments every 48 hours, all without the cost of a full-time in-house engineering team.
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
15% Custom Web Application Development
15% Mobile App Development (iOS & Android)
3% API Development & Integration
17% Product UX Strategy
AI Summary
“NF Tech develops AI-powered web and mobile applications rapidly, enabling clients to launch MVPs within 30 days and iterate quickly without full-time engineering costs.”
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Pro Coder
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At Pro Coder, we elevate the standard, going beyond limits and exceeding expectations. As a frontrunner in the digital space, we offer more than just traditional software development; we provide innovative solutions that transform possibilities. Our steadfast dedication to excellence and a continuou
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+13 Services
7% Mobile App Development (iOS & Android)
8% Custom Web Application Development
4% API Development & Integration
1% E-Commerce Development
AI Summary
“Pro Coder delivers innovative digital solutions, including advanced software development, web design, and digital marketing, dedicated to exceeding expectations and driving business success.”
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Consoleops Private Limited
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ConsoleOps Private Limited is a technology solutions firm that focuses on custom software development, AI-driven applications, ERP and POS systems, as well as comprehensive digital transformation services. We merge technical skills with business acumen to create scalable, secure, and future-oriented
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+11 Services
3% E-Commerce Development
6% Custom Web Application Development
5% Mobile App Development (iOS & Android)
5% API Development & Integration
AI Summary
“ConsoleOps Private Limited delivers custom software, AI-driven applications, ERP and POS systems, and digital transformation services, leveraging modern technologies to create scalable, secure, and innovative digital solutions for diverse industries.”
digitndus-technologies
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Digitndus Technologies Pvt. Ltd. is a company specializing in digital marketing and software development, offering tailored solutions for our clients. Our services include web design, web development, digital marketing, software development, mobile app development, and graphic design. Our team of ex
Highlights
Services Provided+17 Services
5% API Development & Integration
10% Mobile App Development (iOS & Android)
8% Custom Web Application Development
2% E-Commerce Development
AI Summary
“Digitndus Technologies Pvt. Ltd. specializes in digital marketing, software and mobile app development, web and graphic design, delivering customized solutions with expert professionalism.”
Webcraft Studio
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WebCraft Studio est une agence spécialisée dans la création de sites internet professionnels destinés aux entrepreneurs ainsi qu'aux petites et moyennes entreprises francophones. Nous réalisons des sites vitrines, des boutiques en ligne, des landing pages à fort potentiel de conversion, des applicat
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
Services Provided+6 Services
4% API Development & Integration
14% Custom Web Application Development
8% E-Commerce Development
4% Mobile App UI Design
AI Summary
“WebCraft Studio creates tailored professional websites, e-commerce stores, SaaS applications, and SEO-optimized digital solutions for SMEs and entrepreneurs in Francophone regions with rapid delivery and ongoing support.”
‏‎‏‎Uid Yazılım Ve Gayrimenkul Sanayi Ticaret Limited Şirketi‎‏
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We offer a comprehensive technology service to our clients, enabling them to seize competitive advantages, promote sustainable growth, and build a trust-based relationship that transcends typical customer interactions. Our aim is to be a supportive partner in your success.
Highlights
2-9
Employees
Services Provided+11 Services
4% API Development & Integration
4% Mobile App Development (iOS & Android)
3% E-Commerce Development
3% Custom Web Application Development
AI Summary
“Uid Yazılım Ve Gayrimenkul Sanayi Ticaret Limited Şirketi provides comprehensive technology services that foster competitive advantages, sustainable growth, and trust-based client relationships for lasting success.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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