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

Lavorg Technologies GmbH
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Lavorg Technologies is your premier partner in createch and a pioneer of the future digital landscape. At our core, we are driven by a love for "All Things Tech." Since our founding in 2011, we have held the belief that every issue can be addressed through simplicity, logic, and adaptability. Whethe
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+17 Services
4% Backend Development
2% E-Commerce Development
2% QA & Software Testing
3% Frontend Development
AI Summary
“Lavorg Technologies GmbH delivers innovative software, AI-driven automation, cloud infrastructure, and UX design solutions, complemented by business consulting, fostering digital transformation and operational excellence.”
Athratech Private Limited
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Athratech embodies innovation, integrity, and a commitment to making an impact. We prioritize a client-centric approach, open communication, and results-oriented execution. Our core values focus on excellence, responsibility, ongoing learning, and intelligent automation. We create scalable, secure,
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+10 Services
8% Custom Web Application Development
3% E-Commerce Development
6% Mobile App Development (iOS & Android)
3% API Development & Integration
AI Summary
“Athratech Private Limited delivers innovative, secure, and scalable digital solutions with a client-focused approach, fostering collaboration, continuous learning, and sustainable business growth through intelligent automation.”
Calatayud Digital Solutions
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We are a comprehensive agency that integrates web development, mobile applications, and digital marketing to foster client growth. Our focus is on developing scalable digital solutions and data-driven marketing strategies that yield tangible outcomes. Our offerings encompass: Custom web development
Highlights
2-9
Employees
Services Provided+14 Services
14% Custom Web Application Development
3% E-Commerce Development
7% Backend Development
5% Frontend Development
AI Summary
“Calatayud Digital Solutions offers comprehensive web development, mobile applications, and digital marketing services, delivering scalable, data-driven solutions that enhance client growth and operational outcomes.”
Hindva InfoTech
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Think creatively and be unique.
Highlights
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+19 Services
7% Custom Web Application Development
5% API Development & Integration
2% QA & Software Testing
4% Mobile App Development (iOS & Android)
AI Summary
“Hindva InfoTech emphasizes creativity and uniqueness, offering innovative solutions across various sectors to deliver distinct and effective services tailored to client needs.”
C
CremUX
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We are Crem UX. Our design process is centered around a deep understanding of both the brand's founder and their target audience. The front-end design of your landing page or application interface serves as the gateway to your customers, whether they are accessing it through smartphones, smartwatche
Highlights
$1,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Services Provided+7 Services
17% Mobile App Development (iOS & Android)
14% Frontend Development
4% API Development & Integration
8% Wireframing & Prototyping
AI Summary
“Crem UX specializes in user-centric front-end design, branding, and agile software development, delivering customized, secure digital solutions across platforms for startups to enterprises.”
The LEO TECH
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Leotech is a comprehensive digital agency dedicated to supporting business growth through various services such as website development, SEO, branding, social media marketing, ERP systems, and tailored software solutions. We collaborate with startups, clinics, spas, restaurants, law firms, eCommerce
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+26 Services
4% Custom Web Application Development
3% Mobile App Development (iOS & Android)
2% API Development & Integration
2% SaaS Product Development
AI Summary
“Leotech is a full-service digital agency offering web development, SEO, branding, marketing, ERP, and custom software solutions to drive scalable growth across diverse industries.”
X Stack Inc.
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X Stack Inc. is a premier custom software development firm that specializes in creating tailored software solutions for startups, small and medium-sized businesses, and enterprises. We take pride in offering a comprehensive range of services, such as mobile app development, web app development, cust
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+14 Services
2% E-Commerce Development
3% API Development & Integration
2% Legacy System Modernization
2% ERP & CRM Development
AI Summary
“X Stack Inc. delivers custom software development services, including mobile and web apps, dev ops, and consulting, using flexible engagement models to support diverse business needs efficiently.”
Begrids
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Begrids is driven by a singular focus: website design, web development, SEO, and an enthusiasm for delivering prompt services to our clients while assisting them in establishing their websites. Our true passion lies in the technology we provide, and we believe that our success is tied to our custome
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+16 Services
8% Custom Web Application Development
3% API Development & Integration
6% Frontend Development
5% CMS Development & Customization
AI Summary
“Begrids specializes in website design, development, and SEO services, focusing on timely delivery and client success through tailored, technology-driven online solutions.”
P
PurvSoft Tech
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Software development and promotion
Highlights
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+5 Services
10% Custom Web Application Development
6% API Development & Integration
5% E-Commerce Development
4% Mobile App Development (iOS & Android)
AI Summary
“PurvSoft Tech specializes in software development and promotion, delivering comprehensive digital solutions to enhance business operations across diverse industries with professionalism and innovation.”
CodeViz Technologies
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Welcome to Codeviz Technologies, where innovation and creativity converge! We are an energetic IT services provider and a comprehensive marketing agency, committed to delivering a distinctive combination of digital skills and marketing know-how. Our goal is to elevate your business by implementing c
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+20 Services
3% Custom Web Application Development
3% API Development & Integration
1% Legacy System Modernization
1% QA & Software Testing
AI Summary
“Codeviz Technologies is a dynamic IT and marketing agency delivering innovative digital solutions and creative strategies to enhance business growth and audience engagement.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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