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

dein-IT-team
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Atdein-IT-team (DIT) provides personalized digital solutions aimed at helping businesses expand, optimize their operations, and remain competitive. We focus on developing websites and mobile applications, e-commerce platforms, and custom software systems tailored to your unique requirements. Our ser
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+4 Services
10% Custom Web Application Development
8% Mobile App Development (iOS & Android)
5% API Development & Integration
2% QA & Software Testing
AI Summary
“dein-IT-team delivers customized digital solutions including websites, mobile apps, e-commerce, and AI-integrated software, enhancing business efficiency and competitive advantage through innovative technologies.”
Department of Product
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We are not a conventional agency or consultancy; rather, we are a business focused on product transformation to help organizations succeed in the AI age. Our expertise includes: - **Conducting AI opportunity assessments**: We conduct thorough interviews within your organization to identify challen
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
London, England, Gb
Services Provided+6 Services
1% Other IT Consulting and SI
10% Machine Learning Model Development
6% Custom AI Chatbot Development
6% AI Strategy & Roadmap Consulting
AI Summary
“Department of Product specializes in AI-driven product transformation, offering opportunity assessments, custom solutions, innovative product delivery, and strategic vision to enhance business success.”
SkyWeft Technologies LLC
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SkyWeft Technologies delivers advanced tech services aimed at helping clients reach their objectives. Our skilled engineers harness cloud technology to create strong, scalable solutions on platforms such as AWS, GCP, and Azure. We navigate the complexities of technology with our proven expertise in
Highlights
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+5 Services
8% API Development & Integration
12% Custom Web Application Development
7% Mobile App Development (iOS & Android)
7% Backend Development
AI Summary
“SkyWeft Technologies specializes in scalable cloud solutions, full-stack development, and flexible engineering talent, enabling clients' digital transformation through expert onshore and offshore services.”
IRYST TECH
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🌟 Our Core Values at IRYST 1. 🚀 Results First We prioritize delivering tangible results rather than mere promises. Each project we undertake is focused on achieving specific business objectives, whether it be growth, conversions, or increased efficiency. 2. 🤝 Client-Focused Approach We view our
Highlights
2-9
Employees
Services Provided+7 Services
10% Custom Web Application Development
6% API Development & Integration
6% Mobile App Development (iOS & Android)
3% E-Commerce Development
AI Summary
“IRYST TECH delivers client-focused, innovative solutions prioritizing tangible results through AI and automation, ensuring speed, transparency, and continuous improvement with a strong ownership mindset.”
devtech-fusion
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DevTech Fusion is an innovative digital marketing and software development firm located in Lahore, Pakistan. Established in 2024, we focus on providing comprehensive digital solutions that enable businesses to grow, secure, and thrive in the rapidly evolving digital landscape. By merging creativity,
Highlights
Lahore, Pk Punjab, Pk
Services Provided+11 Services
4% QA & Software Testing
6% Backend Development
5% E-Commerce Development
4% Frontend Development
AI Summary
“DevTech Fusion, based in Lahore since 2024, delivers integrated digital marketing, software development, cloud, cybersecurity, and e-commerce solutions to enhance business growth and online presence.”
Digital Marketing PTA
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Digital Marketing PTA is a web design agency with extensive expertise in assisting clients with web design and digital marketing to foster growth. We create and develop websites that promote leads, engagement, and sales opportunities. Our focus is on a technique known as Sales Driven Design, allowin
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Pretoria, Gauteng, Za
Services Provided+8 Services
13% CMS Development & Customization
10% Custom Web Application Development
3% API Development & Integration
4% Pay Per Click
AI Summary
“Digital Marketing PTA specializes in Sales Driven Design, delivering high-quality web design and digital marketing solutions that enhance client growth, engagement, and lead generation.”
Rendmate
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At Rendmate, we focus on creating and providing comprehensive digital solutions that facilitate transformation across various sectors. Our areas of expertise include financial services, travel and hospitality, media and IT, online identity and security, as well as healthcare. With a successful histo
Highlights
$50,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Services Provided+12 Services
12% Custom Web Application Development
4% Blockchain & Web3 Development
5% API Development & Integration
5% Backend Development
AI Summary
“Rendmate delivers innovative, scalable digital solutions across sectors including finance, travel, media, security, and healthcare, empowering businesses and governments with secure, efficient technologies.”
TechNext
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Technext96 is a software development and AI solutions company based in Pakistan, dedicated to helping businesses transform their ideas into scalable, high-quality digital products. Our team excels in areas such as custom software development, AI and machine learning, intelligent automation, DevOps,
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+6 Services
6% API Development & Integration
6% Mobile App Development (iOS & Android)
13% Custom Web Application Development
25% DevOps Engineering
AI Summary
“Technext96 is a Pakistan-based software development and AI firm delivering scalable digital products through custom solutions, AI, automation, and agile methodologies with a focus on quality and client collaboration.”
CMITEXPERTS SOFTECH LLP
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⭐ CMITEXPERTS - Premier Provider of Digital Solutions ⭐ ☛ With over 12 years of experience in the ever-evolving field of web development, CMITEXPERTS SOFTECH LLP is committed to offering top-notch digital solutions for small and medium enterprises. Whether your goal is to attract new customers, high
Highlights
< $25/hr
Avg Hourly Rate
10-49
Employees
Jaipur, Rajasthan, In
Services Provided+8 Services
8% Custom Web Application Development
5% E-Commerce Development
6% Backend Development
4% Frontend Development
AI Summary
“CMITEXPERTS SOFTECH LLP delivers comprehensive digital solutions, specializing in web development, design, CMS, backend, and API integration, empowering SMEs to build robust online presences.”
Rovertech Limited
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Comprehensive IT Services. Boost Your Revenue by Enhancing Your Technology Solutions. Our goal is to empower businesses to optimize their digital presence and maintain a competitive edge in the rapidly evolving technology sector by offering integrated solutions. With a focus on customer satisfaction
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
New Territories, Hk
Services Provided+16 Services
7% Custom Web Application Development
4% Mobile App Development (iOS & Android)
5% API Development & Integration
4% E-Commerce Development
AI Summary
“Rovertech Limited delivers comprehensive IT services including application development, cloud solutions, e-commerce, consulting, and security, enabling businesses to optimize digital presence and efficiency.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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