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

Anklee Technologies
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Anklee Technologies is an IT solutions company based in India that emphasizes results, focusing on website design and development, custom software services, mobile app creation, and digital marketing. With over a decade of experience in the industry, we assist startups, SMEs, and large enterprises i
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+11 Services
3% API Development & Integration
4% Custom Web Application Development
2% E-Commerce Development
5% Mobile App Development (iOS & Android)
AI Summary
“Anklee Technologies is an Indian IT solutions firm specializing in custom software, responsive web design, mobile apps, and digital marketing, delivering scalable, user-centric digital solutions.”
ALB Group
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Our goal is to transform innovative ideas into digital solutions that enhance businesses. We envision a future where our technological tools facilitate seamless interactions. As Adaptive Logic Builders, we are committed to creating a smarter tomorrow. **About Us:** We are a dedicated tech team bas
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+8 Services
10% Custom Web Application Development
10% Mobile App Development (iOS & Android)
5% API Development & Integration
5% Backend Development
AI Summary
“ALB Group, a Poland-based tech team, specializes in creating tailored web and mobile digital solutions using advanced technologies to drive innovative business transformation.”
FLATX
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We are a small yet highly skilled development team located in Vietnam, made up of 2–9 seasoned engineers. With a proven history of successfully completing projects for Japanese clients, we focus on full-cycle product development, encompassing everything from frontend and backend to infrastructure, a
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
9% Backend Development
4% Custom Web Application Development
10% Frontend Development
2% API Development & Integration
AI Summary
“FLATX is a skilled Vietnamese development team delivering full-cycle solutions across frontend, backend, cloud, AI, voice, and IoT technologies, with proven expertise serving Japanese clients.”
Noves Digital
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Noves Digital is a technology agency established in 2020 in İzmir, focusing on bespoke software development and digital product design. With a core team of three, we create scalable web applications, mobile apps, and customized software solutions for both startups and established businesses. By util
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+8 Services
5% E-Commerce Development
10% Mobile App Development (iOS & Android)
14% Custom Web Application Development
5% API Development & Integration
AI Summary
“Noves Digital, a İzmir-based agency since 2020, delivers custom software, AI-driven solutions, and user-centric digital designs with scalable web, mobile apps, and cloud services for diverse clients.”
Metanetica
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Metanetica is a company that specializes in developing websites and mobile applications, as well as offering AI-driven and customized software solutions, including CRM, accounting software, database management systems (DBMS), human resource management systems (HRMS), enterprise resource planning (ER
Highlights
10-49
Employees
Mumbai, Maharashtra, In
Services Provided+18 Services
8% Custom Web Application Development
3% API Development & Integration
2% E-Commerce Development
7% Mobile App Development (iOS & Android)
AI Summary
“Metanetica develops websites, mobile applications, and offers AI-driven, customized software solutions across CRM, ERP, HRMS, accounting, inventory, and educational management systems.”
Infinitude Private Limited
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Infinitude Private Limited is a technology and digital services firm based in Sri Lanka that is transforming businesses through advanced solutions. Focusing on software and mobile application development, the company creates AI-enhanced solutions and user-friendly UI/UX designs. Since its inception
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+6 Services
8% Custom Web Application Development
8% Mobile App Development (iOS & Android)
7% E-Commerce Development
7% SaaS Product Development
AI Summary
“Infinitude Private Limited is a Sri Lankan technology firm delivering AI-enhanced software, mobile apps, and digital transformation services for businesses across startups to corporations since 2024.”
Web Care House (PVT) LTD
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Web Care House is a leading and established information and software development firm that delivers exceptional services to its esteemed clients and B2B partners (outsourcing). We specialize in web development, application development, graphic design, search engine optimization, and more. Our client
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+10 Services
4% Mobile App Development (iOS & Android)
5% E-Commerce Development
2% Legacy System Modernization
3% API Development & Integration
AI Summary
“Web Care House (PVT) LTD. specializes in comprehensive digital solutions, offering services ranging from web development to IT support, tailored to enhance business operations.”
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AZRAK
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AZRAK is an innovative technology partner focused on equipping businesses with state-of-the-art solutions. We offer a wide array of services, including managed IT services, strong physical and cybersecurity measures, customized telecom solutions, efficient ERP systems, advanced cloud and AI technolo
Highlights
$50-99/hr
Avg Hourly Rate
10-49
Employees
Oakville, Ontario, Ca
Services Provided+15 Services
15% Managed IT Services
10% Cybersecurity Services
10% ERP Consulting and SI
8% Generative AI
AI Summary
“AZRAK is a technology partner delivering comprehensive IT, cybersecurity, telecom, ERP, cloud, AI, and low-voltage infrastructure solutions, driving transformative business improvements.”
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Techieform
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About Techieform IT Solutions: Established in 2022, Techieform IT Solutions is an innovative Software Development and IT Consulting firm dedicated to facilitating digital transformation. Our Mission: We focus on developing customized technology solutions to support the growth of startups, digital ag
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Regina, Saskatchewan, Ca
Services Provided+8 Services
10% Custom Web Application Development
9% Mobile App Development (iOS & Android)
4% API Development & Integration
3% Frontend Development
AI Summary
“Techieform IT Solutions, established in 2022, delivers tailored software development, IT consulting, and innovative digital solutions across diverse industries, empowering enterprises through advanced technologies and services.”
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AiLoop Technologies
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Welcome to AiLoop Technology, where we utilize state-of-the-art Artificial Intelligence (AI) and Machine Learning (ML) technologies to create transformative solutions. We focus on groundbreaking AI innovations that reshape industries by providing advanced data insights and predictive analytics. Our
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+26 Services
4% API Development & Integration
4% Custom Web Application Development
4% Mobile App Development (iOS & Android)
3% E-Commerce Development
AI Summary
“AiLoop Technologies develops advanced AI and machine learning solutions, delivering predictive analytics and data insights to enhance business operations, decision-making, and foster innovative growth across industries.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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