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

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Axile
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"We assist businesses, farmers, and organizations in turning intricate challenges into actionable, data-informed solutions by merging extensive knowledge in agriculture, healthcare, and sustainability with advanced technologies such as AI, IoT, and remote sensing."
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+1 Services
4% API Development & Integration
7% Mobile App Development (iOS & Android)
23% Custom Web Application Development
33% Business Intelligence (BI) Dashboard Development
AI Summary
“Axile integrates expertise in agriculture, healthcare, and sustainability with AI, IoT, and remote sensing to provide data-driven solutions for complex business and organizational challenges.”
Navyug Infotech
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Navyug Infotech is an Ahmedabad-based web development firm in India that focuses on WordPress development, setting up Shopify stores, creating custom website designs, and providing eCommerce solutions. With more than six years of experience in the field, we assist businesses in creating websites tha
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+2 Services
17% Custom Web Application Development
14% E-Commerce Development
3% API Development & Integration
23% Web App UI Design
AI Summary
“Navyug Infotech is an Ahmedabad-based web development company specializing in custom WordPress and Shopify solutions, eCommerce, SEO optimization, and ongoing website maintenance for global clients.”
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A&M Digital
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We offer IT services utilizing the latest technologies.
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+11 Services
8% Mobile App Development (iOS & Android)
7% QA & Software Testing
5% Legacy System Modernization
7% API Development & Integration
AI Summary
“A&M Digital provides comprehensive IT services, leveraging cutting-edge technologies to deliver innovative solutions tailored to diverse business needs across various industries.”
Wilbur Development
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We are a woman-owned organization specializing in custom software development, with our primary delivery center located in LATAM. 💡 OUR SERVICES Custom Software Development We create tailored software solutions, including web and mobile applications as well as enterprise systems, to fit your s
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Las Vegas, Nevada, Us
Services Provided+8 Services
11% Custom Web Application Development
9% Mobile App Development (iOS & Android)
5% API Development & Integration
10% Product UX Strategy
AI Summary
“Wilbur Development, a woman-owned LATAM-based company, delivers custom software, AI solutions, cloud infrastructure, staff augmentation, and user-centric UI/UX design across diverse industries.”
LEVIEV'S
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Levievs – Your Partner in Custom Software and Marketing Excellence Levievs is a premier software development and marketing firm located in Israel, boasting over 25 years of industry experience. We focus on developing impactful web platforms, mobile applications, and cloud solutions that help busine
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Tel Aviv-Yafo, Il
Services Provided+28 Services
2% Code Review & Technical Audits
2% SaaS Product Development
2% Mobile App Development (iOS & Android)
2% Legacy System Modernization
AI Summary
“Levievs, an Israeli software and marketing firm with over 25 years experience, delivers custom software, cloud solutions, AI, and digital marketing to startups and enterprises globally.”
Tech Prescient
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Tech Prescient is a high-end Software Product Development Services firm that is deeply committed to achieving customer success. Quality and customer satisfaction are central to everything we undertake. Our primary areas of specialization include: - **Product Development Engineering**: We manage pr
Highlights
10-49
Employees
Pune, Maharashtra, In
Services Provided+8 Services
9% Custom Web Application Development
6% Mobile App Development (iOS & Android)
4% API Development & Integration
4% Backend Development
AI Summary
“Tech Prescient delivers high-quality software development, data intelligence, cloud solutions, and mobile applications, emphasizing client success through technical expertise and collaborative agile methodologies.”
Tattvawave
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At TattaWave Solutions, we focus on providing high-performance, scalable digital solutions. Whether you are starting a custom Shopify store, transitioning to Shopify Plus, creating powerful Drupal websites, or designing user-friendly mobile apps, our expert team guarantees smooth execution and susta
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+2 Services
4% API Development & Integration
8% Custom Web Application Development
14% Mobile App Development (iOS & Android)
8% E-Commerce Development
AI Summary
“Tattvawave delivers scalable digital solutions including custom Shopify stores, Shopify Plus migrations, Drupal websites, and mobile apps, emphasizing customization, performance, and sustainable business growth.”
Motiventive
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Here’s a simplified version of the text: Motiventive is a reputable web and mobile development agency that provides secure and scalable software solutions in Canada, Pakistan, and the UK. Our certified engineers create high-performance applications to support the growth of companies in fintech, e-
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Toronto, Ontario, Ca
Services Provided+27 Services
5% Mobile App Development (iOS & Android)
4% SaaS Product Development
2% QA & Software Testing
2% API Development & Integration
AI Summary
“Motiventive is a trusted software development agency offering secure, scalable web, mobile, cloud, and cybersecurity solutions across fintech, e-commerce, healthcare, SaaS, and education sectors globally.”
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Autopay Services
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We develop products and implement specialized solutions to facilitate the sale of goods and services through electronic channels. Our clientele consists of major companies in the financial, insurance, and utilities industries, including PKO Bank Polski, Santander, AliorBank, Vectra, Energa, Credit A
Highlights
$50,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Sopot, Poland, Pl
Services Provided+12 Services
4% E-Commerce Development
7% Custom Web Application Development
3% Mobile App Development (iOS & Android)
3% API Development & Integration
AI Summary
“Autopay Services delivers innovative electronic payment and banking solutions to major financial, insurance, and utility companies, supporting e-commerce, mobile banking, and digital transaction management.”
AlphaAmics Infotech
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Alphaamics is a worldwide IT solutions firm that offers top-notch consulting, IT solutions, and outsourcing services. Our dedication to quality, professionalism, and value-centric solutions distinguishes us from the competition. With a talented team in development and management, we provide scalable
Highlights
< $25/hr
Avg Hourly Rate
10-49
Employees
Surat, Gujarat, In
Services Provided+9 Services
8% Custom Web Application Development
5% Backend Development
5% Frontend Development
5% Mobile App Development (iOS & Android)
AI Summary
“AlphaAmics Infotech is a global IT firm delivering scalable web, mobile, and API integration solutions with expertise in UI/UX design, open source customization, and agile development methodologies.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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