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

RedHotTeam
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We offer comprehensive eCommerce development services with a strong emphasis on Shopify, React, and Node.js. Our expert team builds fast, user-friendly, and scalable online stores for brands aiming to enhance their online sales. **Shopify Development** - Custom Shopify store development from desig
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+7 Services
4% Custom Web Application Development
10% E-Commerce Development
4% Backend Development
4% Frontend Development
AI Summary
“RedHotTeam specializes in comprehensive eCommerce solutions, delivering custom Shopify development, advanced front-end/back-end technologies, AI-driven UX, marketing integrations, and robust DevOps support to scale online brands.”
AliTech Solutions
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AliTech offers Future Tech Services, focusing on Software Development for Business Applications including Workflow Management Software, CRM Systems, Cloud solutions, AI/ML, DevOps, and UI/UX Design. Visit us at https://alitech.io and https://www.hostingbyalitech.com.
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+20 Services
5% Custom Web Application Development
2% Frontend Development
3% Backend Development
4% SaaS Product Development
AI Summary
“AliTech Solutions specializes in future-ready software development, delivering business applications, workflow management, CRM, cloud, AI/ML, DevOps, and UI/UX design services.”
STAYKool Productions
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We specialize in developing and maintaining web technologies—including websites, servers, AI, SEO, and social media—for both businesses and individuals aiming to enhance their reach, engagement, and profitability. Our skilled team keeps abreast of the latest trends and technologies across various in
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+6 Services
10% Mobile App Development (iOS & Android)
8% Custom Web Application Development
2% API Development & Integration
20% DevOps Engineering
AI Summary
“STAYKool Productions offers comprehensive web technologies and digital services, including app development, AI integration, marketing, and IT consulting to enhance business growth and engagement.”
F
Fyniti
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At Fyniti, we are committed to offering innovative software solutions that enable businesses to succeed in the digital era. Our expert team works diligently to provide customized, scalable, and secure software designed to enhance efficiency, boost productivity, and foster growth.
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+11 Services
4% Mobile App Development (iOS & Android)
2% Blockchain & Web3 Development
4% API Development & Integration
6% Custom Web Application Development
AI Summary
“Fyniti delivers customized, scalable software solutions enhancing business efficiency, productivity, and growth, empowering organizations to thrive in the digital era with secure, innovative technology.”
AB Consulting
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AB Consulting is a specialized technology and business consultancy established by seasoned entrepreneurs and technologists with a proven track record of creating and expanding multiple ventures in Southeast Asia. With more than ten years of practical experience in digital transformation, we assist c
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+17 Services
9% Custom Web Application Development
4% Mobile App Development (iOS & Android)
5% API Development & Integration
5% ERP & CRM Development
AI Summary
“AB Consulting delivers data-driven digital transformation and software solutions, supporting startups to multinationals in fintech, ERP, and UX design with expertise from seasoned entrepreneurs.”
Techtics.AI
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Techtics.ai is a premier software house focused on facilitating digital transformation and enabling businesses to succeed. Our team consists of certified IT experts, including over 10 PhD holders, who are dedicated to delivering tailored solutions that address our clients' specific requirements. Wit
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+23 Services
2% QA & Software Testing
1% Blockchain & Web3 Development
2% Code Review & Technical Audits
3% API Development & Integration
AI Summary
“Techtics.ai is a global software house offering AI, web, mobile, and custom development services, focusing on digital transformation, security, and tailored IT solutions to optimize business success.”
Moventi Corp
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Technology is transforming our world. We assist organizations in shaping the future by embracing technology with an innovative approach. Moventi is an IT consultancy with over 8 years of experience in facilitating digital transformation across key sectors. Our services include business solutions, cu
Highlights
$25,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Services Provided+21 Services
3% Frontend Development
2% Mobile App Development (iOS & Android)
5% Custom Web Application Development
3% API Development & Integration
AI Summary
“Moventi Corp. is an experienced IT consultancy specializing in digital transformation, offering business solutions, custom software development, IT outsourcing, and cloud service management globally.”
JUST.engineer
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JUST.engineer is a business solutions provider located in Vietnam, specializing in enterprise applications. Our primary services include mobile app, software, and website development, which encompasses AI and ML solutions. Established in 2019, we are a privately owned company composed of skilled and
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+13 Services
7% Mobile App Development (iOS & Android)
7% Frontend Development
3% CMS Development & Customization
3% API Development & Integration
AI Summary
“JUST.engineer is a Vietnam-based business solutions provider offering software, mobile app, and web development, including AI and ML, with expertise across diverse technologies for global clients.”
CoDiv Solutions
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CoDiv Solution is a comprehensive software development company focused on creating outstanding web experiences and bespoke coded solutions. Our dedicated team of developers utilizes a wide array of technologies, such as .NET, MERN Stack, Laravel, and WordPress, to produce strong and scalable softwar
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+11 Services
5% Custom AI Chatbot Development
4% LLM Integration & Prompt Engineering
3% ERP Consulting and SI
3% AI Strategy & Roadmap Consulting
AI Summary
“CoDiv Solutions delivers custom web and software development services using technologies like .NET, MERN, Laravel, and WordPress to create scalable, business-aligned digital solutions.”
Kachamale Technologies
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Kachamale Software Solutions is committed to offering affordable and efficient software solutions tailored for enterprises, businesses, entrepreneurs, and idealists, particularly within the transport and logistics sector. Our goal is to foster collaboration among all stakeholders and provide innovat
Highlights
10-49
Employees
Services Provided+20 Services
8% Mobile App Development (iOS & Android)
10% Custom Web Application Development
5% API Development & Integration
3% E-Commerce Development
AI Summary
“Kachamale Technologies designs innovative, user-friendly software solutions for transport, logistics, and enterprises, fostering collaboration and enabling business growth with affordable, reliable technology.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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