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

TechExcel Ltd
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We assist startups, small and medium-sized enterprises, and large corporations in creating new products or enhancing current ones. With dedicated teams specializing in the design and development of web and mobile solutions, TechExcel Ltd revitalizes businesses by generating innovative ideas, develop
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Gandhinagar, Gujarat, In
Services Provided+15 Services
4% Mobile App Development (iOS & Android)
2% E-Commerce Development
2% CMS Development & Customization
3% API Development & Integration
AI Summary
“TechExcel Ltd. partners with diverse businesses to design and develop innovative web and mobile solutions, fostering product innovation, enhancement, and sustainable growth across industries.”
Mavroqit
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Marvoqit is a specialized technology partner that assists European engineering teams in delivering solutions more quickly, securely, and intelligently. We create, develop, and protect essential platforms using an outcome-oriented methodology and transparent processes. Our expertise lies in Enterpris
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+10 Services
7% Legacy System Modernization
3% API Development & Integration
1% Mobile App Development (iOS & Android)
6% Custom Web Application Development
AI Summary
“Mavroqit partners with European engineering teams to accelerate secure enterprise software development, cloud infrastructure, cybersecurity, AI, and digital transformation, ensuring GDPR compliance and optimized product delivery.”
Stake Horizon Private Limited
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At Stake Horizon Pvt. Ltd., we are committed to providing outstanding talent in multiple fields to support business success in today's dynamic and rapidly evolving environment. Whether you're looking for a developer, designer, or SEO specialist, we connect you with top professionals who seamlessly i
Highlights
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
12% Mobile App Development (iOS & Android)
14% Custom Web Application Development
5% E-Commerce Development
3% API Development & Integration
AI Summary
“Stake Horizon Private Limited connects businesses with top talent across development, design, and SEO, simplifying hiring to support growth in a dynamic, evolving market environment.”
Javtech Infosys
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We are a committed technology firm focused on providing innovative and results-oriented digital solutions. Our offerings range from contemporary website development and robust mobile applications to strategic SEO services and imaginative graphic design. We assist businesses in establishing a strong
Highlights
10-49
Employees
Services Provided+6 Services
13% Mobile App Development (iOS & Android)
12% Custom Web Application Development
5% API Development & Integration
3% E-Commerce Development
AI Summary
“Javtech Infosys delivers comprehensive digital solutions including web and app development, SEO, and graphic design, empowering businesses to enhance their online presence and growth.”
The Clicks Marketing Inc.
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The Clicks Full-Service Digital Marketing Agency The Clicks is a comprehensive digital marketing agency located in Canada, committed to assisting businesses in flourishing within the digital landscape. We provide a wide array of services aimed at enhancing your brand's online visibility, attractin
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+4 Services
2% API Development & Integration
3% E-Commerce Development
28% Mobile App Development (iOS & Android)
13% Search Engine Optimization (SEO)
AI Summary
“The Clicks Marketing Inc. is a Canadian full-service digital agency offering SEO, PPC, social media, content, web design, email marketing, and CRO to enhance online growth and conversions.”
BrainlySoft Infotech
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BrainlySoft is a reputable software company that provides customized web, Windows, and app development solutions tailored to the specific requirements of businesses. We focus on creating dependable, scalable, and user-friendly applications that help organizations enhance their operations, boost effi
Highlights
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
14% Custom Web Application Development
5% Mobile App Development (iOS & Android)
10% Backend Development
5% API Development & Integration
AI Summary
“BrainlySoft develops customized, scalable web and app solutions using technologies like VB, C#, and ASP .Net, enhancing business operations through secure, efficient, and future-ready software products.”
Compile Vision
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Compile Vision is a technology company centered on AI, dedicated to creating intelligent systems that assist businesses in automating their workflows, improving decision-making, and achieving efficient scalability. We develop advanced solutions leveraging Generative AI, Retrieval-Augmented Generatio
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
7% API Development & Integration
16% Custom Web Application Development
10% Mobile App Development (iOS & Android)
13% AI Agent & Multi-Agent System Development
AI Summary
“Compile Vision develops AI-driven intelligent systems and automation tools to streamline business workflows, enhance decision-making, and deliver scalable, data-driven solutions across various industries.”
Vexosoft
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VexoSoft is a premier software development agency located in Islamabad, Pakistan, assisting businesses globally in turning their concepts into impactful digital products. Our expertise spans Website Development, Mobile App Development, SaaS Applications, AI Solutions, Cloud Solutions, UI/UX Design,
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+9 Services
10% Custom Web Application Development
10% Mobile App Development (iOS & Android)
10% SaaS Product Development
6% API Development & Integration
AI Summary
“VexoSoft is a Pakistan-based software development agency delivering customized website, mobile, SaaS, AI, cloud, UI/UX, and DevOps solutions globally with client-focused agile delivery.”
Ofoq Modern Technology افق التکنلوجیا الحدیثه
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Ofoq Modern Technology (افق التکنلوجیا الحدیثه) is a registered software and blockchain firm located in Al Mouj, Muscat, Oman (CR No. 1629399). We connect traditional software engineering with Web3, providing production-quality solutions for businesses in Oman, the GCC, and the MENA region. **WHAT
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
8% Custom Web Application Development
2% Legacy System Modernization
15% Blockchain & Web3 Development
3% Mobile App Development (iOS & Android)
AI Summary
“Ofoq Modern Technology is an Omani firm specializing in blockchain, Web3, software, and AI solutions, delivering innovative, scalable applications and secure smart contracts across the MENA region.”
Luar Kerja
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Job Environment
Highlights
Pangkalan Kerinci, Sumatra, Id
Services Provided+4 Services
8% Mobile App Development (iOS & Android)
10% Custom Web Application Development
7% QA & Software Testing
8% API Development & Integration
AI Summary
“Luar Kerja specializes in providing comprehensive job environment solutions, focusing on enhancing workplace conditions and promoting efficient, safe, and productive employment settings.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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