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.

How this list is built

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

ORAXIS
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Harnessing technology as the core of both vision and implementation. Creating digital products designed to last.
Highlights
$50,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Services Provided+1 Services
30% API Development & Integration
20% E-Commerce Development
25% AI Agent & Multi-Agent System Development
20% Generative AI
AI Summary
“ORAXIS is a technology-driven company specializing in creating durable digital products by integrating innovation and practical implementation to deliver lasting solutions across various sectors.”
CHROMEINFOTECH
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
ChromeInfotech is a prominent software development and testing company with over a decade of industry experience, dedicated to delivering a comprehensive ecosystem for Software Application Development and Testing, with a strong emphasis on client satisfaction. To showcase our expertise, we provide p
Highlights
< $25/hr
Avg Hourly Rate
10-49
Employees
Noida, Uttar Pradesh, In
Services Provided+1 Services
18% Backend Development
15% API Development & Integration
12% Custom Web Application Development
5% Frontend Development
AI Summary
“ChromeInfotech delivers expert software development and comprehensive testing services, emphasizing client partnership, quality, and continual improvement across diverse technologies and automation tools.”
matom.ai
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Your partner in digital development for essential systems. We specialize in design, quick prototyping, developing minimum viable products, comprehensive development, and system integration. Our expertise lies in 3D/2D Computer Vision, Artificial Intelligence, and Robotics.
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Kaunas, Lt
Services Provided
30% Custom Web Application Development
20% API Development & Integration
40% Machine Learning Model Development
10% Robotic Process Automation (RPA)
AI Summary
“matom.ai excels in digital development, offering design, prototyping, MVP creation, and system integration with expertise in 3D/2D computer vision, AI, and robotics technologies.”
Matrixbrains Private Limited
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
At Matrixbrains, our goal is to spearhead the development of the future's digital landscape. We are an innovative IT company dedicated to expanding the limits of creativity and developing advanced software products that utilize the transformative capabilities of Web 3.0, augmented reality (AR), virt
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided
25% Mobile App Development (iOS & Android)
30% Custom Web Application Development
25% API Development & Integration
20% QA & Software Testing
AI Summary
“Matrixbrains Private Limited is an innovative IT firm focusing on advanced software development utilizing Web 3.0, AR, VR, and blockchain technologies to transform digital experiences and industries.”
Argenius
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Argenius is a results-oriented digital innovation firm dedicated to creating robust, scalable, and future-ready web platforms. We excel in developing high-performing web applications, multi-vendor marketplaces, tailored business systems, and e-commerce solutions that blend contemporary design with r
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
New Delhi, Delhi, In
Services Provided
70% Custom Web Application Development
15% Mobile App Development (iOS & Android)
15% API Development & Integration
AI Summary
“Argenius is a digital innovation firm specializing in scalable web platforms, multi-vendor marketplaces, and e-commerce solutions, focusing on performance, user engagement, and business growth.”
Elite Dev Squad LLC
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
EDS is a top software development firm focused on delivering high-quality, innovative, and tailored solutions that help businesses reach their objectives. Reasons to Choose EDS: Reliable Partner: With 87% of our clients returning for additional services, we demonstrate our dedication to long-term su
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Am
Services Provided+2 Services
20% API Development & Integration
20% Software Development Services
20% Mobile App Development (iOS & Android)
20% Custom Web Application Development
AI Summary
“Elite Dev Squad LLC excels in Software Development with strong expertise in API Development, Custom Web Applications, Mobile Apps, and E-Commerce Development. Their tailored, high-quality solutions enhance business performance significantly.”
Codepole
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Whether you're a VC-funded scaleup, a large corporation, or a newly established startup, our focus is on addressing your challenges and leveraging technology to create value for you and your users. Codepole is a software development company located in Stockholm and Warsaw, with a sales office in Swi
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Stockholm, Stockholm, Se
Services Provided+1 Services
23% Custom Web Application Development
10% Mobile App Development (iOS & Android)
17% API Development & Integration
35% IT Staff Augmentation
AI Summary
“Codepole, a software development firm with offices in Stockholm, Warsaw, and Switzerland, offers tailored IT team extension, end-to-end development, and consulting across fintech, gaming, medtech, ecommerce, and gambling.”
Absolute App Labs
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Absolute App Labs is an international software engineering firm that assists startups, medium-sized businesses, and large enterprises in creating scalable, intelligent, and high-quality digital products. We combine extensive engineering knowledge with AI-enhanced development to provide faster produc
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Chennai, Tamil Nadu, In
Services Provided+1 Services
30% Custom Web Application Development
15% Mobile App Development (iOS & Android)
10% E-Commerce Development
20% Legacy System Modernization
AI Summary
“Absolute App Labs is a global software engineering firm delivering scalable, AI-enhanced digital solutions for startups to enterprises, specializing in product development, API integration, automation, and analytics across diverse industries.”
ITH
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Our goal is to drive progress in multiple sectors by offering innovative technology solutions and specialized knowledge. With a committed team of professionals, we aim to turn concepts into tangible outcomes.
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided
45% Custom Web Application Development
35% Mobile App Development (iOS & Android)
20% API Development & Integration
AI Summary
“ITH delivers innovative technology solutions and expert knowledge across various sectors, transforming concepts into practical outcomes through a dedicated professional team.”
Techlusion LLC
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Techlusion is an AI-Native Product Engineering Studio founded by Khelan Patel, who has experience at AWS, Google, Oracle, and IBM. Headquartered in Seattle with an engineering center in Ahmedabad, India, we focus on building, scaling, and modernizing technology for startups and enterprises in sector
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Lynnwood, Washington, Us
Services Provided+11 Services
5% Computer Vision Solutions
5% MLOps & Model Deployment Infrastructure
3% Other IT Consulting and SI
5% AI Strategy & Roadmap Consulting
AI Summary
“Techlusion LLC is an AI-native product engineering studio delivering scalable, modern solutions across industries by integrating expert engineers aligned with client goals for accountable results.”

...

...

...

Latest insights & expert perspectives

Explore data-backed surveys with inputs from top industry experts.

Stated minimum project sizes among the firms listed under software development services on Edverise, with the $50,000 band shaded

Vendor Selection

Questions to Ask a Software Development Agency: Six With Proof

A vetting script for second-round agency calls: six questions, the document each answer has to produce, and what a directory listing or a badge really proves.

Nihar Ranjan Rout

10/31/2026

Three software development quotes of $38,000, $94,000 and $210,000 converted to effective hourly rates of $79, $73 and $87.50

Vendor Selection

How to Compare Software Development Quotes Priced 5x Apart

Three bids for the same build are rarely comparable as written. A normalization checklist, a weighted grid adapted from FAR Part 15.3, and the hourly arithmetic.

Akash Mohapatra

10/31/2026

Chart of minimum project size stated by firms listed under AI agent development on Edverise, with the $50,000 band highlighted

Vendor Selection

AI Agent Development Cost: Build, Tokens, Reliability

An AI agent has three costs. Compute the monthly token bill from published list prices, then set the build quote against what listed firms actually charge.

Santanu Prasad Sahoo

10/31/2026

Check All Our Blogs

One Platform. One Promise. One Trust.

Edverise is building the trusted way to find tech vendors. List your company early, or talk to us about backing the platform.

Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

Where buyers look next

Latest insights & expert perspectives

Questions to Ask a Software Development Agency: Six With Proof

How to Compare Software Development Quotes Priced 5x Apart

AI Agent Development Cost: Build, Tokens, Reliability

One Platform. One Promise. One Trust.