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

Elixios
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Elixios is a cutting-edge technology agency that offers AI automation solutions, tailored applications, and effective digital marketing strategies.
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+4 Services
6% API Development & Integration
5% E-Commerce Development
14% Custom Web Application Development
13% Product UX Strategy
AI Summary
“Elixios is a technology agency specializing in AI automation, customized applications, and comprehensive digital marketing strategies to enhance business efficiency and growth.”
Zencloud Technologies Private Limited
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We are a top software development firm known for providing innovative, high-quality solutions in various industries.
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Islamabad, Pk
Services Provided+10 Services
8% Mobile App Development (iOS & Android)
7% E-Commerce Development
3% Legacy System Modernization
10% Custom Web Application Development
AI Summary
“Zencloud Technologies Private Limited is a leading software development firm delivering innovative, high-quality solutions across diverse industries, demonstrating broad technical expertise and commitment to client success.”
Fawnix
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Fawnix is an innovative digital solutions company committed to assisting businesses and individuals in turning their ideas into impactful products. We focus on developing fast, scalable, and user-centric platforms that merge contemporary design with robust technology. From the initial concept to the
Highlights
$1,000+
Min Project Size
10-49
Employees
Services Provided+14 Services
6% Custom Web Application Development
2% QA & Software Testing
1% E-Commerce Development
2% Code Review & Technical Audits
AI Summary
“Fawnix delivers innovative, user-centric digital solutions, transforming ideas into scalable, efficient platforms through collaborative design, customized development, and strategic execution for lasting business growth.”
Alo Technology Corporation Limited
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We provide complete, all-inclusive services that cover a wide range of digital solutions tailored to address the demands of contemporary web, mobile, and cloud computing environments.
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+9 Services
11% Custom Web Application Development
10% Mobile App Development (iOS & Android)
7% API Development & Integration
1% Blockchain & Web3 Development
AI Summary
“Alo Technology Corporation Limited delivers comprehensive digital solutions, specializing in contemporary web, mobile, and cloud computing services to meet diverse business needs.”
Glitex Solutions Limited
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### About Glitex Solutions At Glitex Solutions, we assist businesses in creating dependable, scalable, and secure digital products that address genuine challenges. We partner with startups, large corporations, and organizations seeking a trustworthy technology collaborator. ### Our Core Offerings
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+2 Services
11% Custom Web Application Development
10% Mobile App Development (iOS & Android)
4% API Development & Integration
25% Search Engine Optimization (SEO)
AI Summary
“Glitex Solutions delivers scalable, secure digital products including custom software, web and mobile apps, and cloud solutions, serving diverse industries globally with expertise and quality commitment.”
Solvor Pvt Ltd
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At Solvor, we develop innovative software that enables businesses to accelerate their operations, work efficiently, and grow with assurance. Our offerings range from AI-powered automation to tailored applications, cloud services, data management, and design, all focused on achieving genuine business
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+9 Services
8% Mobile App Development (iOS & Android)
14% Custom Web Application Development
7% API Development & Integration
5% E-Commerce Development
AI Summary
“Solvor Pvt Ltd. delivers innovative, AI-driven software solutions including automation, cloud services, and data management, enabling businesses to optimize operations and achieve sustainable growth.”
Progsquare Technologies Private Limited
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We assist startups and businesses in transforming their concepts into reality by creating high-quality MVPs, SaaS systems, and custom software tailored to their requirements. Our team is skilled in developing scalable web and mobile applications, AI-driven solutions, and cloud infrastructures to gua
Highlights
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+8 Services
6% Custom Web Application Development
4% Mobile App Development (iOS & Android)
6% SaaS Product Development
4% Backend Development
AI Summary
“Progsquare Technologies specializes in developing scalable MVPs, SaaS, custom software, AI-driven solutions, and cloud infrastructures, offering end-to-end services from design to support for diverse businesses.”
NEW DREAM NETWORK
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New Dream Network offers IT consulting and software development services. We assist businesses and organizations in boosting their performance and increasing their competitiveness.
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
250-999
Employees
Bengaluru, Karnataka, In
Services Provided+28 Services
3% Mobile App Development (iOS & Android)
3% E-Commerce Development
2% Legacy System Modernization
3% QA & Software Testing
AI Summary
“New Dream Network provides IT consulting and software development services, helping businesses enhance performance and competitiveness through tailored technological solutions.”
Untapped
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Unlock Your Hidden Potential Our goal is to help take your business from an ambitious idea to an established presence through the development of mobile apps and websites. So, what does this entail? With the aid of data, we assist companies in discovering the ideal balance between business, techno
Highlights
$50-99/hr
Avg Hourly Rate
10-49
Employees
London, England, Gb
Services Provided+11 Services
7% Mobile App Development (iOS & Android)
5% E-Commerce Development
3% Backend Development
2% Frontend Development
AI Summary
“Untapped delivers comprehensive digital solutions integrating software development, UI/UX design, branding, digital marketing, and AI services to support business growth through innovative technology and strategic expertise.”
Citrix Digital
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Citrix Digital provides secure digital workspaces and cloud solutions designed to assist organizations in revolutionizing their work processes. Our extensive range of virtualization, mobility, networking, and cloud solutions allows companies to safely deliver applications and data to any device, reg
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+10 Services
4% ERP & CRM Development
2% E-Commerce Development
9% Custom Web Application Development
6% Mobile App Development (iOS & Android)
AI Summary
“Citrix Digital offers secure digital workspace and cloud solutions, enabling organizations to deliver applications and data to any device, enhancing productivity, security, and business efficiency.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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