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

TieCodes
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**GPS Tracking Devices**: Includes brands such as Teltonika, Gosafe, Sinotrack, Concox, Calamp, Jimi, Ruptela, and others. **Nominatim Setup**: Offers complimentary lifetime reverse geocoding. **Mobile GPS Tracking**: Functions in both background and foreground. **Mapping**: Utilizes Google Maps,
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Lahore, Pk Punjab, Pk
Services Provided
60% Custom Web Application Development
30% Mobile App Development (iOS & Android)
10% API Development & Integration
AI Summary
“TieCodes delivers comprehensive GPS tracking, fleet management, supply chain, and custom app solutions with integrated mapping, notifications, and real-time monitoring across diverse industries.”
Wings Tech Solutions
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WHAT WE DO: We solve our clients' challenges by embarking on an exciting quest for straightforward, elegant solutions! At Wings Tech Solutions, we enjoy tackling obstacles across diverse industries. This allows our team to gain insight into how IT can address numerous issues encountered in various s
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Rajkot, Gujarat, In
Services Provided+2 Services
15% Mobile App Development (iOS & Android)
20% Custom Web Application Development
10% API Development & Integration
5% E-Commerce Development
AI Summary
“Wings Tech Solutions delivers innovative IT services across diverse industries, emphasizing professionalism, timely delivery, and global collaboration since 2010.”
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ANG Solutions
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Data Science & Auditing: Examine, authenticate, and gain a comprehensive understanding of the data and its wider context. Machine Learning & AI: Utilize the newest advancements in artificial intelligence to improve your product and functionalities. Integration & Deployment: Assess, integrate, and im
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Tel Aviv-Yafo, Il
Services Provided+2 Services
25% Custom Web Application Development
20% API Development & Integration
5% Legacy System Modernization
15% Managed IT Services
AI Summary
“ANG Solutions delivers comprehensive services in data science, AI-driven product enhancements, and customized software integration, ensuring thorough data analysis and seamless deployment for businesses.”
Pivotal
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At Pivotal, we go beyond being mere developers; we see ourselves as your collaborators in creating customized, data-driven solutions. Here's how your business can benefit: **Data-Driven Insight:** Allow data to steer your next decisions. With Pivotal, you’ll tap into the full potential of informat
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+1 Services
35% Custom Web Application Development
15% API Development & Integration
20% AI Strategy & Roadmap Consulting
20% BI & Big Data Consulting & SI
AI Summary
“Pivotal partners with businesses to create customized, data-driven solutions, delivering efficient MVPs with quick turnaround times to support informed decision-making and growth.”
ReacTree
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At Reactree, our enthusiastic team of technology experts is committed to bringing your digital concepts to life. With a strong emphasis on innovation and user-focused design, we specialize in mobile app development, web application development, CMS and custom website development, as well as Flutter
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Karachi, Sindh, Pk
Services Provided+1 Services
40% Mobile App Development (iOS & Android)
30% Custom Web Application Development
10% API Development & Integration
10% E-Commerce Development
AI Summary
“ReacTree specializes in innovative mobile, web, CMS, and Flutter app development, delivering user-focused, scalable digital solutions that enhance brand presence and support business growth.”
BEE BUSINESS & CONSULTING
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We are a specialized IT company focused on software development, analytics, artificial intelligence, software integration, and staff augmentation. Our value proposition is to serve as strategic partners for our clients, helping them reach their business goals.
Highlights
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+3 Services
23% API Development & Integration
28% Custom Web Application Development
15% AI Strategy & Roadmap Consulting
15% Machine Learning Model Development
AI Summary
“BEE BUSINESS & CONSULTING is a specialized IT firm offering software development, AI, analytics, integration, and staff augmentation services, partnering strategically to achieve clients' business objectives.”
Helal
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#DDD #EDA #SapIntegration #Flutter #Node #Maintainable Although we appreciate managing complete projects from inception to completion, we also take pleasure in collaborating with your team to guide and mentor your talent to reach expertise. We create (or assist you in creating) robust and maintainab
Highlights
$25,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+1 Services
17% API Development & Integration
10% Legacy System Modernization
7% ERP & CRM Development
33% Operational Process Consulting
AI Summary
“Helal specializes in developing robust and maintainable software, offering end-to-end project management and team mentoring, fostering long-term client partnerships with professionalism and expertise.”
Jireh Software Solutions
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Jireh Software Solutions is a top provider of digital innovations focused on converting manual processes into efficient, technology-based systems. The company helps businesses reach their objectives by offering tailored software, mobile app development, and website services, all aimed at maximizing
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Bengaluru, Karnataka, In
Services Provided+1 Services
25% Custom Web Application Development
15% E-Commerce Development
30% Mobile App Development (iOS & Android)
20% API Development & Integration
AI Summary
“Jireh Software Solutions delivers customized digital innovations, transforming manual processes through software, mobile app, and website development to optimize business performance and customer experience.”
Div-Art
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Greetings! We are a team of web development experts with experience in site creation since 2007. Over the years, we have completed a wide range of web projects, from simple landing pages to complex web portals, utilizing various languages, technologies, frameworks, and plugins. Div-Art is fueled by
Highlights
$25-49/hr
Avg Hourly Rate
10-49
Employees
Rivne, Rivne, Ua
Services Provided+1 Services
30% Custom Web Application Development
10% Mobile App Development (iOS & Android)
20% API Development & Integration
25% Backend Development
AI Summary
“Div-Art is a professional web development team specializing in versatile projects, leveraging PHP, JavaScript frameworks, responsive design, and API integrations with a client-focused approach.”
TheCodeCrafters
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TheCodeCrafters is an IT solutions provider specializing in mobile and web application development, Salesforce, e-commerce solutions, CMS websites, API integration, and website design and development. Our mission is to empower businesses globally by delivering comprehensive services from initial pro
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Surat, Gujarat, In
Services Provided+1 Services
30% Mobile App Development (iOS & Android)
25% Custom Web Application Development
20% API Development & Integration
15% CMS Development & Customization
AI Summary
“TheCodeCrafters delivers comprehensive IT solutions including app development, Salesforce, e-commerce, and web design, enabling efficient outsourcing to reduce costs and enhance client focus.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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