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

AVPFOUNDER
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AVPFounder is one of the top website design and mobile app development firms in Noida and Greater Noida, providing effective digital solutions for startups, small to medium enterprises (SMEs), and large businesses. We focus on custom website development, UI/UX design, mobile app creation, and scalab
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+14 Services
4% API Development & Integration
10% Custom Web Application Development
9% Mobile App Development (iOS & Android)
3% E-Commerce Development
AI Summary
“AVPFounder delivers custom web and mobile app development, UI/UX design, and scalable digital solutions for startups to enterprises, emphasizing quality, innovation, and business growth.”
D
Dacitos technologies private limited
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We create cutting-edge digital solutions that enable businesses to grow more quickly, work more efficiently, and remain competitive in today's marketplace.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+5 Services
6% Mobile App Development (iOS & Android)
10% Custom Web Application Development
6% API Development & Integration
3% E-Commerce Development
AI Summary
“Dacitos Technologies Private Limited develops advanced digital solutions that accelerate business growth, enhance operational efficiency, and maintain competitiveness in the evolving marketplace.”
Lead Nova Solutions Ltd
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Lead Nova Solutions LTD is a London-based IT consultancy and managed services provider dedicated to assisting organizations both in the UK and worldwide in turning technological challenges into competitive advantages. Established in 2024, we focus on strategic IT consulting, cloud migration, cyberse
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+11 Services
9% Custom Web Application Development
5% API Development & Integration
4% Legacy System Modernization
4% Frontend Development
AI Summary
“Lead Nova Solutions LTD, a London-based IT consultancy founded in 2024, delivers strategic IT consulting, cloud migration, cybersecurity, custom software development, and managed services globally to enhance business competitiveness.”
Active_MGNT - Mobile APP+ Web Development & IT Support
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Explore a creative haven where your digital aspirations come alive with our offerings in website and app development for Android and iOS, along with digital marketing services. Since 2018, we have established ourselves as a distinguished digital leader, combining a diverse range of skills from web d
Highlights
$5,000+
Min Project Size
$150+/hr
Avg Hourly Rate
2-9
Employees
Services Provided+4 Services
17% Mobile App Development (iOS & Android)
14% Custom Web Application Development
3% API Development & Integration
13% Search Engine Optimization (SEO)
AI Summary
“Active_MGNT delivers professional website and mobile app development for Android and iOS, coupled with strategic digital marketing, emphasizing creativity, quality, and enhanced online presence since 2018.”
AFverse, Inc.
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Welcome to AFverse, a premier IT services firm committed to providing innovative technology and AI solutions. Our focus is on empowering businesses with advanced capabilities by harnessing artificial intelligence to foster innovation and reach their full potential in the digital age. At AFverse, we
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+8 Services
8% AI Strategy & Roadmap Consulting
9% Machine Learning Model Development
5% Robotic Process Automation (RPA)
4% AI-Powered Document Processing
AI Summary
“AFverse, Inc. delivers tailored AI, data analytics, cloud, and software development solutions, empowering businesses to innovate and thrive through advanced, scalable IT services and expert consulting.”
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Techolution
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At Techolution, our vision is to enable businesses to transition to the new digital landscape swiftly and responsibly.
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
50-249
Employees
Services Provided+11 Services
8% Machine Learning Model Development
3% IT Staff Augmentation
6% AI Strategy & Roadmap Consulting
3% AI Agent & Multi-Agent System Development
AI Summary
“Techolution empowers businesses to embrace digital transformation swiftly and responsibly, delivering innovative technology solutions and comprehensive services across diverse industries for sustainable growth.”
engineersTech
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🏆 engineersTech Named Among the Top 10 Software Companies in Bangladesh (2026) Are you in search of a dependable tech partner in Bangladesh? engineersTech has been officially acknowledged for its excellence in the following areas: ✅ E-commerce Development: Creating scalable, high-conversion onlin
Highlights
2-9
Employees
Services Provided+6 Services
8% Custom Web Application Development
7% Mobile App Development (iOS & Android)
3% API Development & Integration
7% E-Commerce Development
AI Summary
“engineersTech, a top Bangladeshi software firm, delivers scalable e-commerce, secure fintech, high-performance mobile apps, and custom ERP/CRM solutions, empowering diverse businesses globally.”
Botmer International
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Botmer International is a worldwide technology partner focusing on AI-driven solutions, mobile applications, and bespoke software development. We assist startups, scaleups, and large enterprises in speeding up innovation through dedicated engineering teams, fixed monthly fees, and quick onboarding p
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+5 Services
5% AI Strategy & Roadmap Consulting
7% Custom AI Chatbot Development
5% Machine Learning Model Development
12% Generative AI
AI Summary
“Botmer International offers AI-driven, mobile, and custom software development services with rapid onboarding and fixed pricing, supporting startups and enterprises globally to innovate efficiently.”
Pro Design Minds
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We offer digital services such as website development, marketing, logo design, animation, and more.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
250-999
Employees
Services Provided+6 Services
9% E-Commerce Development
8% API Development & Integration
9% Mobile App Development (iOS & Android)
10% Product UX Strategy
AI Summary
“Pro Design Minds specializes in digital services including website development, marketing, logo design, and animation, delivering comprehensive creative solutions for diverse business needs.”
DigiAlgid
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We are a software company with over two years of experience in web development, specializing in PHP/CodeIgniter, Laravel, Joomla, WordPress, MySQL, HTML, CSS, Bootstrap, JavaScript, jQuery, Ajax, Linux servers, social network APIs, payment gateways, React Native, Git, software development processes,
Highlights
2-9
Employees
Services Provided+7 Services
5% API Development & Integration
17% Custom Web Application Development
8% Mobile App Development (iOS & Android)
3% E-Commerce Development
AI Summary
“DigiAlgid is a software company specializing in web development with expertise in multiple technologies, offering quality code, prompt support, and efficient project management for comprehensive solutions.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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