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

datarockets
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We are a software agency that specializes in AI and accelerates software development through our unique method, Agentic Engineering, which employs AI agents while ensuring quality and security. Over the past 11 years, we have collaborated with companies like Nike, Mejuri, Dealmaker, YipitData, and A
Highlights
$50,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Toronto, Ontario, Ca
Services Provided+3 Services
25% Custom Web Application Development
15% API Development & Integration
10% Backend Development
18% AI Strategy & Roadmap Consulting
AI Summary
“Datarockets is a software agency specializing in AI-driven development using Agentic Engineering, delivering secure, high-quality web, mobile, and AI solutions with expertise from startups to enterprises.”
UpUp
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At UpUp, we focus on turning intricate business issues into sophisticated technological solutions. Our skilled team, with a background in Fintech, Healthcare, and Well-Being, specializes in Web and Mobile Development, UX/UI, Web Design, and DevOps. We create tailored projects that foster growth and
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Lviv, Lviv, Ua
Services Provided+5 Services
13% API Development & Integration
18% Custom Web Application Development
15% Mobile App Development (iOS & Android)
5% E-Commerce Development
AI Summary
“UpUp delivers tailored technological solutions across Fintech, Healthcare, and Well-Being, specializing in web and mobile development, UX/UI design, and DevOps to enhance user experience and business growth.”
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Tech Chaps
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Turning Concepts into Software Solutions. We enable businesses with advanced digital tools. Our enthusiasm lies in harnessing technology to foster growth and drive innovation in your organization.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Leicester, England, Gb
Services Provided
40% Custom Web Application Development
30% Mobile App Development (iOS & Android)
20% API Development & Integration
10% E-Commerce Development
AI Summary
“Tech Chaps specializes in transforming concepts into advanced software solutions, empowering businesses with digital tools that foster growth and innovation across diverse industries.”
Yotomations LLC
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Yotomations is an AI and automation consultancy located in Tampa, established by Yaakov (Koby) Oranski. We assist businesses of all sizes in optimizing their operations, automating sales processes, and accelerating growth by integrating sophisticated CRM systems, workflow automation, and AI technolo
Highlights
$1,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Lutz, Florida, Us
Services Provided+7 Services
13% Workflow Automation (Zapier / Make / n8n)
3% ERP Consulting and SI
5% AI Strategy & Roadmap Consulting
4% Other IT Consulting and SI
AI Summary
“Yotomations LLC specializes in AI-driven automation and CRM optimization, empowering businesses to streamline operations, enhance lead management, and accelerate growth through advanced workflows and marketing integration.”
Neonwiz Technologies
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Neonwiz Technologies is a software firm focused on delivering high-quality digital solutions. Whether you need tailored web development or intricate automation systems, we emphasize clean coding practices and modular designs. This approach guarantees that our solutions can seamlessly expand as your
Highlights
$50-99/hr
Avg Hourly Rate
2-9
Employees
Valsad, Gujarat, In
Services Provided+3 Services
25% Custom Web Application Development
13% API Development & Integration
7% E-Commerce Development
5% Legacy System Modernization
AI Summary
“Neonwiz Technologies delivers bespoke web development and automation solutions emphasizing clean, modular designs. They provide continuous support and maintenance to ensure scalable, reliable business operations.”
Everbit Software
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Bringing your software concept to life doesn't need to be challenging. At Everbit, we collaborate with startups and growing companies to develop customized software solutions that enhance efficiency, scalability, and growth. Whether you're aiming to introduce a new platform, streamline workflows, or
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+1 Services
30% Custom Web Application Development
25% Mobile App Development (iOS & Android)
20% API Development & Integration
15% Frontend Development
AI Summary
“Everbit Software partners with startups and growing businesses to deliver custom web and mobile applications using modern technologies, focusing on scalable, efficient, and tailored software solutions.”
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Rebing Tech
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Our goal is to provide creative, top-notch software solutions that enable businesses to succeed in the digital era. We are dedicated to achieving excellence, ensuring customer satisfaction, and fostering growth through advanced technology and cooperative partnerships.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided
20% API Development & Integration
30% Custom Web Application Development
50% Managed IT Services
AI Summary
“Rebing Tech delivers innovative software solutions, leveraging advanced technology and partnerships to drive business growth, excellence, and customer satisfaction in the digital age.”
XR Technica
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XR Technica is an innovative and rapidly growing company that develops products and solutions centered around virtual reality for medical training. Based in Melbourne, Australia, we operate in the areas of Augmented Reality, Virtual Reality, Internet of Things (IoT), and Artificial Intelligence (AI)
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Melbourne, Victoria, Au
Services Provided+1 Services
33% Custom Web Application Development
18% API Development & Integration
15% AI Strategy & Roadmap Consulting
17% Machine Learning Model Development
AI Summary
“XR Technica, based in Melbourne, develops advanced VR and AR solutions employing AI, IoT, and spatial computing to enhance medical training through immersive, haptic-enabled simulators.”
SRVLabs Llc
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SRVLabs is a specialist software development and IT firm that assists startups and large businesses in creating scalable and dependable technology solutions. Our areas of expertise include tailored web and mobile development, cloud solutions, API integrations, database design, and AI integration. We
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Tbilisi, Tbilisi, Ge
Services Provided
30% Custom Web Application Development
15% API Development & Integration
5% E-Commerce Development
50% Machine Learning Model Development
AI Summary
“SRVLabs specializes in scalable software development, offering expertise in web, mobile, cloud solutions, API integration, databases, and AI, supporting startups and enterprises with seamless collaboration.”
Solarte
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Many software projects claim to bring about change but often result in frustration, budget excesses, and unsuitable solutions. We approach our work differently. Our guiding principle is "The Art of Solutions," where we prioritize your business goals over mere billable hours. By utilizing extensive e
Highlights
2-9
Employees
Lodz, Lodz, Pl
Services Provided
30% Custom Web Application Development
15% API Development & Integration
5% Mobile App Development (iOS & Android)
50% Generative AI
AI Summary
“Solarte delivers risk-free, AI-driven software solutions prioritizing business goals with fixed-budget predictability, comprehensive testing guarantees, and lifelong support for stable operational growth.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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