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

Wiriser Rise Together
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Wiriser Rise Together is a comprehensive IT firm that provides tailored web, mobile, and software solutions aimed at helping businesses thrive and expand in the digital landscape. 💼 Premium Variant Wiriser Rise Together focuses on developing scalable digital products like websites, mobile applicati
Highlights
$25-49/hr
Avg Hourly Rate
10-49
Employees
Khajuri Jatti, In
Services Provided+19 Services
3% API Development & Integration
2% E-Commerce Development
6% Custom Web Application Development
4% Mobile App Development (iOS & Android)
AI Summary
“Wiriser Rise Together develops tailored web, mobile, and software solutions, enabling businesses to grow and succeed by transforming concepts into scalable digital products and services.”
Vervelo
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Vervelo is an AI-focused engineering partner that assists startups and enterprises in transforming ambitious ideas into impactful digital products. We excel in creating scalable, intelligent software solutions that integrate Generative AI, full-stack development, and product strategy. Whether it's d
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
50-249
Employees
Services Provided+7 Services
5% Mobile App Development (iOS & Android)
8% SaaS Product Development
5% Frontend Development
3% QA & Software Testing
AI Summary
“Vervelo partners with startups and enterprises to develop scalable AI-driven software, including SaaS platforms and automation systems, delivering effective digital products across diverse industries.”
Digital Roxy
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Digital Roxy is a BigCommerce development agency that provides tailored store solutions for businesses in the US, including custom store creation, headless architecture, B2B portal development, ERP integration, and platform migration. We excel in developing BigCommerce Stencil themes, customizing th
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
6% API Development & Integration
5% Custom Web Application Development
7% E-Commerce Development
2% Mobile App Development (iOS & Android)
AI Summary
“Digital Roxy is a US-based BigCommerce development agency specializing in custom store solutions, ERP integration, headless architecture, B2B portals, platform migration, and ongoing technical support.”
Opus Logica Inc.
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Opus Logica is a comprehensive development agency that assists businesses in transitioning from ideas to market successfully. We have created and expanded products in AI, blockchain, and consumer platforms, prioritizing usability, strategic planning, and sustainable growth. Whether you're testing a
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+6 Services
17% Custom Web Application Development
10% Mobile App Development (iOS & Android)
7% API Development & Integration
13% Product UX Strategy
AI Summary
“Opus Logica is a development agency specializing in AI, blockchain, and consumer platforms, guiding businesses from concept to market with a focus on usability and sustainable growth.”
Codidot it solutions private limited
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Codidot IT Solutions Private Limited is a leading technology partner focused on turning complex business challenges into smooth digital experiences. Located in India, we specialize in providing top-notch software development, web applications, and advanced IT consultancy tailored to the specific nee
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+13 Services
6% E-Commerce Development
5% Mobile App Development (iOS & Android)
4% API Development & Integration
5% Custom Web Application Development
AI Summary
“Codidot IT Solutions Private Limited delivers comprehensive software development, web design, IT consulting, and digital marketing services, leveraging agile methods and advanced technologies to provide scalable solutions for diverse industries.”
Crescibit Technology Pvt. Ltd.
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Crescibit is a product design firm located in Mumbai, India, specializing in user experience, user interface, as well as frontend and backend development for websites, web applications, and mobile applications.
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Mumbai, Maharashtra, In
Services Provided+8 Services
6% Mobile App Development (iOS & Android)
5% Custom Web Application Development
3% API Development & Integration
6% Frontend Development
AI Summary
“Crescibit Technology Pvt. Ltd., based in Mumbai, specializes in comprehensive product design, offering UX/UI expertise and full-stack development for web and mobile applications.”
Native Software
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Native Software is a purpose-driven company focused on achieving specific goals. Our team is dedicated to delivering high-quality products punctually, designed to provide a sophisticated and seamless user experience. Comprised of committed and skilled IT professionals, we have the expertise to accur
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+4 Services
8% API Development & Integration
20% Custom Web Application Development
15% Mobile App Development (iOS & Android)
8% Frontend Development
AI Summary
“Native Software is a dedicated IT firm delivering innovative, user-centric solutions with advanced technology, skilled professionals, and timely execution to meet evolving market demands and client needs.”
Qwery Technolabs
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Qwery Technolabs is a web design and development firm that builds websites utilizing strategic approaches and technology across various platforms. Our focus is on enhancing your brand's visibility and dynamism. Established in 2018, we have provided more than a thousand technological solutions to sma
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
Surat, Gujarat, In
Services Provided+11 Services
4% API Development & Integration
5% E-Commerce Development
5% Mobile App Development (iOS & Android)
6% Custom Web Application Development
AI Summary
“Qwery Technolabs, founded in 2018 in India, delivers strategic web design and development services using diverse technologies, enhancing brand visibility for SMEs and large corporations globally.”
Nuxio Solutions
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Nuxio Solutions apoya a las empresas en su camino hacia el éxito en la era digital. Ofrecemos soluciones novedosas que revolucionan tu negocio, permitiéndote estar a la delantera y mejorar tus beneficios.
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+1 Services
17% Custom Web Application Development
12% Mobile App Development (iOS & Android)
5% API Development & Integration
33% Machine Learning Model Development
AI Summary
“Nuxio Solutions supports businesses in digital transformation by providing innovative solutions that enhance competitiveness and profitability, driving success in the evolving digital landscape.”
Fassla Company For Software and Technical Solutions
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Fassla is a multifaceted company located in Nasr City, Cairo, that specializes in IT software development as well as branding and digital marketing services. Besides offering personalized software solutions, Fassla delivers strategic branding, digital marketing, and user experience design to assist
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+1 Services
12% Mobile App Development (iOS & Android)
17% Custom Web Application Development
5% API Development & Integration
33% Social Media Marketing
AI Summary
“Fassla Company for Software and Technical Solutions in Cairo offers tailored IT software development, strategic branding, digital marketing, and UX design to enhance digital presence and brand identity.”

...

...

...

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.