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

Hugh Hancock Consulting
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Our methodology is straightforward. Your business doesn't require more tools; it needs the appropriate systems. We assist teams and growing enterprises in overcoming complex IT hurdles, ensuring that their technology evolves with clarity, security, and purpose. Our team fine-tunes systems that are d
Highlights
$1,000+
Min Project Size
Services Provided+7 Services
10% Custom Web Application Development
8% API Development & Integration
7% Backend Development
5% Frontend Development
AI Summary
“Hugh Hancock Consulting delivers strategic IT solutions including cloud migration, cybersecurity, API and full-stack development, and DevOps, supporting scalable, secure, and growth-oriented technology systems.”
HybridCode Studio
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Hybridcode Studio supports startups, entrepreneurs, and large enterprises in launching and scaling modern, production-ready applications. We integrate full-stack engineering, AI advancements, and modern development methods to create solutions that prioritize performance, scalability, and long-term s
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
7% Mobile App Development (iOS & Android)
10% Custom Web Application Development
14% SaaS Product Development
3% API Development & Integration
AI Summary
“HybridCode Studio delivers scalable SaaS products, custom web and mobile apps, AI chatbots, and integrations with a focus on performance, user experience, and long-term business success.”
ParsavTek
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ParsavTek is an international company focused on Digital and AI Transformation, helping businesses enhance their revenue, commerce, service, and operational systems. We specialize in Enterprise Applications, enabling organizations to grow confidently and intelligently.
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+10 Services
3% Cloud Consulting & SI
2% Workflow Automation (Zapier / Make / n8n)
2% Other IT Consulting and SI
3% Custom AI Chatbot Development
AI Summary
“ParsavTek is a global leader in Digital and AI Transformation, specializing in enterprise applications to help businesses optimize revenue, service, commerce, and operations with intelligent solutions.”
MythicDev Technologies
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MythicDevTechnologies is a comprehensive software development firm that specializes in creating tailored web, mobile, and digital solutions for businesses of any size. We assist startups and expanding companies in turning their ideas into impactful, scalable, and user-friendly products. Our primary
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+11 Services
5% Mobile App Development (iOS & Android)
6% Custom Web Application Development
4% API Development & Integration
2% E-Commerce Development
AI Summary
“MythicDev Technologies delivers customized software, web, and mobile solutions, integrating AI, blockchain, and SEO to enhance business growth, efficiency, and digital presence across industries.”
IngeniousErectors
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We provide web development and design services across various platforms, such as Php, Magento, WordPress, Laravel, CodeIgniter, and several others.
Highlights
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+4 Services
7% API Development & Integration
7% Mobile App Development (iOS & Android)
20% Custom Web Application Development
8% Product UX Strategy
AI Summary
“IngeniousErectors specializes in comprehensive web development and design services, leveraging platforms like PHP, Magento, WordPress, Laravel, and CodeIgniter to deliver tailored digital solutions.”
ZSTRONICS
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Our company focuses on delivering top-notch digital solutions and services customized to meet the distinct needs of our clients. We provide an extensive array of professional services, such as Web Application Development, Mobile Application Development, UI/UX Design, iOS Development, and MVP develop
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Lahore, Pk Punjab, Pk
Services Provided+4 Services
14% Mobile App Development (iOS & Android)
7% QA & Software Testing
10% Custom Web Application Development
3% API Development & Integration
AI Summary
“ZSTRONICS delivers tailored digital solutions including web, mobile, UI/UX, and MVP development, combining innovation and expertise to help businesses achieve their technology goals.”
Adorbis Technology Pvt Ltd
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Adorbis Technology is an innovative force in the retail tech and e-commerce sector. Our goal is to develop a holistic ecosystem that seamlessly connects B2B, B2C, D2C, and C2C interactions, utilizing advanced technologies like artificial intelligence. At Adorbis, we are committed to dismantling con
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+14 Services
7% API Development & Integration
4% Mobile App Development (iOS & Android)
6% E-Commerce Development
8% Product Design
AI Summary
“Adorbis Technology pioneers AI-driven retail and e-commerce solutions, creating an integrated platform connecting B2B, B2C, D2C, and C2C interactions to streamline commerce globally.”
Bali Websmith
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Bali Websmith is a web design and development firm with more than 9 years of experience in creating high-converting websites. We focus on developing and enhancing designs into fully operational websites for clients in the stock market, hospitality sector (villa websites), corporate businesses, and e
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Denpasar Selatan, Nusa Tenggara, Id
Services Provided+9 Services
12% Custom Web Application Development
5% API Development & Integration
3% Legacy System Modernization
6% Product UX Strategy
AI Summary
“Bali Websmith is a web design and development firm with over 9 years of experience, specializing in high-converting websites for diverse sectors including stock market, hospitality, corporate, and education.”
ZIN Technologies
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Since 2007, we have collaborated with some of the largest Mobile Network Operators in the world, including T-Mobile, Verizon Wireless, AT&T, Sprint, Soft Bank, ROGERS, Telefonica, and many others. Our work has involved integrating their subscription management APIs, GGSNs with RADIUS for authenticat
Highlights
$50,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+10 Services
5% Custom Web Application Development
6% Mobile App Development (iOS & Android)
6% API Development & Integration
4% Backend Development
AI Summary
“ZIN Technologies, since 2007, delivers remote software solutions in IoT, APIs, mobile apps, and staffing, integrating subscription and billing systems for leading global mobile operators.”
Teople Technologies
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We are a technology-focused company that provides software solutions and services tailored for startups, small to medium-sized enterprises (SMEs), and large businesses globally. Our commitment to quality, innovation, and tangible business results enables us to assist organizations in turning their c
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Pimpri-Chinchwad, Maharashtra, In
Services Provided+9 Services
14% Mobile App Development (iOS & Android)
15% Custom Web Application Development
5% API Development & Integration
3% Other IT Consulting and SI
AI Summary
“Teople Technologies delivers innovative software solutions and services including custom development, AI, IoT, cloud, and IT staffing, supporting startups to large enterprises worldwide.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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