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

Easesmith
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will be composed
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
15% Mobile App Development (iOS & Android)
20% Custom Web Application Development
10% E-Commerce Development
5% API Development & Integration
AI Summary
“Easesmith is a company specializing in innovative solutions, delivering comprehensive services that integrate technology and expertise to meet diverse client needs across multiple sectors.”
control c&v
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Control C&V is a comprehensive software development company dedicated to creating robust, scalable, and contemporary digital solutions. Our expertise lies in developing web applications, mobile apps for both Android and iOS, custom software systems, and SaaS platforms tailored to address specific bu
Highlights
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+9 Services
8% Custom Web Application Development
6% Mobile App Development (iOS & Android)
4% API Development & Integration
5% SaaS Product Development
AI Summary
“Control C&V delivers comprehensive software development, offering web and mobile apps, custom solutions, cloud services, and enterprise-grade systems focused on innovation, scalability, and user experience.”
Techouse Ltda
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app bubble no-code developer
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+8 Services
10% Mobile App Development (iOS & Android)
6% API Development & Integration
3% E-Commerce Development
4% Custom Web Application Development
AI Summary
“Techouse Ltda. specializes in app development using no-code platform Bubble, enabling rapid creation of functional applications without traditional programming expertise.”
kefitup
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We enhance your brand by leveraging our experience and expertise in brand strategy, medical marketing, and patient communication.
Highlights
Services Provided+11 Services
8% API Development & Integration
8% Custom Web Application Development
5% Mobile App Development (iOS & Android)
5% E-Commerce Development
AI Summary
“Kefitup specializes in brand strategy, medical marketing, and patient communication, delivering expert services that enhance brand value and engagement across healthcare sectors.”
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Fincoopers tech india pvt ltd
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Fincoopers Tech (FTI) is a contemporary tech firm located in Indore that focuses on AI-driven automation and transforming workflows. We enable businesses to automate manual, repetitive tasks with intelligent systems that can scale, improving accuracy, lowering operational costs, and effortlessly boo
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Services Provided+18 Services
5% Mobile App Development (iOS & Android)
5% Legacy System Modernization
7% QA & Software Testing
7% API Development & Integration
AI Summary
“Fincoopers Tech India Pvt Ltd specializes in AI-driven workflow automation, delivering scalable intelligent solutions that enhance accuracy, reduce costs, and improve business productivity efficiently.”
Spike Web Services
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Spike Web Services is a trustworthy agency in Nigeria specializing in web development, digital marketing, IT consulting, and business development. Our team is dedicated to client satisfaction, guiding you through the entire user journey to deliver a comprehensive end-to-end solution. We make it a pr
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Eket, Akwa Ibom, Ng
Services Provided+77 Services
1% E-Commerce Development
1% Mobile App Development (iOS & Android)
1% API Development & Integration
1% Backend Development
AI Summary
“Spike Web Services is a Nigerian agency offering web development, digital marketing, IT consulting, and business development, delivering tailored end-to-end solutions focused on client satisfaction.”
devesearch
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Devesearch is a contemporary company specializing in web and mobile application development, dedicated to creating intelligent, scalable, and user-focused digital solutions. We collaborate with startups, small enterprises, and expanding brands to transform ideas into impactful products that succeed
Highlights
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+6 Services
9% Custom Web Application Development
3% QA & Software Testing
3% E-Commerce Development
9% Mobile App Development (iOS & Android)
AI Summary
“Devesearch develops custom web and mobile applications, offering end-to-end solutions focused on innovative, scalable, and user-centric digital products for diverse businesses.”
Buimb Digital Marketing
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Buimb Digital is a digital marketing agency that acts as a key ally for businesses aiming to succeed in the online realm. By harnessing their knowledge and employing various digital marketing strategies, agencies assist businesses in enhancing brand visibility, attracting specific audiences, engagin
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Services Provided+30 Services
3% Custom Web Application Development
3% E-Commerce Development
3% Mobile App Development (iOS & Android)
3% API Development & Integration
AI Summary
“Buimb Digital Marketing specializes in delivering comprehensive digital marketing solutions, enhancing online presence and driving business growth through strategic campaigns and innovative technologies.”
Kinetonic
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Kinetonic is a leading technology firm based in Tunisia, offering comprehensive digital transformation solutions to industries worldwide. We integrate advanced AI and robotics expertise with a full range of IT infrastructure, strategic management, marketing innovation, and full-stack development. Ou
Highlights
$1,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Services Provided+15 Services
6% Mobile App Development (iOS & Android)
1% Blockchain & Web3 Development
2% Legacy System Modernization
2% ERP & CRM Development
AI Summary
“Kinetonic delivers comprehensive digital transformation by integrating AI, robotics, IT infrastructure, strategic management, growth marketing, and full-stack development for Industry 4.0 success.”
Pbs Digitals
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PBS Digital is a comprehensive IT solutions provider focused on enhancing businesses with cutting-edge digital technologies. We offer expertise in web design and development, search engine optimization, logo creation, ERP solutions, IPTV services, and comprehensive digital marketing strategies. Our
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+19 Services
5% Custom AI Chatbot Development
7% AI Strategy & Roadmap Consulting
5% Machine Learning Model Development
3% API Development & Integration
AI Summary
“PBS Digital delivers comprehensive IT solutions including web development, SEO, ERP, IPTV, and digital marketing, empowering businesses to grow and excel in the digital era.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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