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

HiveRift
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
HiveRift is a performance-oriented digital solutions agency that supports startups, small and medium-sized enterprises, and large corporations in their growth through web development, mobile applications, AI solutions, and digital marketing. Having worked with over 387 clients in more than 10 countr
Highlights
10-49
Employees
Services Provided+12 Services
8% Custom Web Application Development
7% Mobile App Development (iOS & Android)
3% API Development & Integration
2% E-Commerce Development
AI Summary
“HiveRift is a digital solutions agency delivering customized web, mobile, AI, and marketing services to startups and enterprises, driving growth across India and internationally.”
Jawumitech
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Jawumitech is an agency specializing in web and mobile development, dedicated to creating high-performance digital products tailored for contemporary businesses. We excel in developing custom e-commerce platforms, mobile apps, and expandable business websites aimed at enhancing user experience, boos
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
13% Custom Web Application Development
10% Mobile App Development (iOS & Android)
13% E-Commerce Development
7% Backend Development
AI Summary
“Jawumitech delivers tailored web and mobile development solutions, including e-commerce and UI/UX design, to drive scalable growth for startups and businesses globally through modern technologies.”
S
Sacesta
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
We offer IT services focused on web and mobile application development.
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+2 Services
20% Custom Web Application Development
20% Mobile App Development (iOS & Android)
5% E-Commerce Development
5% API Development & Integration
AI Summary
“Sacesta specializes in IT services, delivering comprehensive web and mobile application development solutions to meet diverse client needs across various industries.”
10xworks
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
We're your trusted ally in accelerating technological innovation! From the initial idea to a successful launch, we're here to support you at every stage. Whether you're a startup visionary or an experienced professional, we'll assist you in validating, scaling, and achieving unprecedented growth.
Highlights
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
5% E-Commerce Development
10% Custom Web Application Development
8% Mobile App Development (iOS & Android)
2% API Development & Integration
AI Summary
“10xworks partners with startups and professionals to validate ideas, accelerate technological innovation, and support growth from concept to successful market launch.”
Incrosoft
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Incrosoft was established on February 20, 2020, by Susmoy Debnath, with the aim of creating and marketing top-quality software for customers. The company focuses on developing innovative and efficient software solutions designed to help businesses of various sizes and sectors thrive. They hold the b
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+3 Services
10% Custom Web Application Development
5% E-Commerce Development
8% Mobile App Development (iOS & Android)
2% API Development & Integration
AI Summary
“Incrosoft, founded in 2020 by Susmoy Debnath, develops innovative, efficient, and affordable software solutions that enhance and support diverse business operations across sectors.”
AXALIZE Incorporate
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
We focus on providing top-notch IT solutions through a blend of full-stack development, system integration, and mobile application expertise. Axalize is a reliable IT outsourcing partner with a strong presence in Japan, the US, and Southeast Asia, recognized for developing scalable systems and digit
Highlights
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+8 Services
8% Custom Web Application Development
6% Mobile App Development (iOS & Android)
5% Backend Development
4% Frontend Development
AI Summary
“AXALIZE Incorporate specializes in scalable IT solutions including full-stack development, mobile apps, system integration, and consulting across Japan, the US, and Southeast Asia, delivering reliable, user-centric products.”
N
NOD Software
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
After two decades of creating projects, I've discovered that the most challenging aspect is seldom the coding itself — it’s about understanding what to build and the reasons behind it. In the evenings, I assist a select few individuals in gaining that clarity before they embark on their projects. If
Highlights
$100-149/hr
Avg Hourly Rate
Services Provided+15 Services
5% Mobile App Development (iOS & Android)
10% Custom Web Application Development
8% API Development & Integration
3% E-Commerce Development
AI Summary
“NOD Software offers expert software architecture design, AI integration, technical consulting, and engineering coaching, helping founders and tech leaders make informed, scalable, and practical technology decisions.”
Tamim Digital
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Nearly seven years ago, we entered the fast-paced realm of digitalization with a clear goal: to develop innovative solutions that merge creativity and technology. Now, we proudly operate as a well-respected digital marketing agency, focusing on user-centered design and data-driven insights. Our rang
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+5 Services
11% Mobile App Development (iOS & Android)
10% E-Commerce Development
3% Custom Web Application Development
1% API Development & Integration
AI Summary
“Tamim Digital is a global digital marketing agency specializing in website and mobile app development, e-commerce, graphic design, video animation, branding, content creation, and data-driven strategies.”
J&J Digital Studio
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
At J&J Digital Studio, we create and develop brands, websites, and digital products that empower ambitious startups to make an impact, differentiate themselves, and grow. We collaborate with visionary founders and early-stage teams to transform ideas into purposeful, high-performing digital experien
Highlights
$1,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Services Provided+10 Services
5% API Development & Integration
10% Custom Web Application Development
7% Mobile App Development (iOS & Android)
7% Frontend Development
AI Summary
“J&J Digital Studio partners with startups to design and develop impactful digital brands, websites, and products, combining creative strategy, innovative design, and full-stack development for scalable solutions.”
Exigency
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Exigency, a prominent digital marketing agency with a substantial footprint across various states, is your reliable ally in the intricate realm of online marketing. Our goal is straightforward: to boost your brand's digital visibility, foster growth, and deliver meaningful results. Our achievements
Highlights
< $25/hr
Avg Hourly Rate
50-249
Employees
Kent, Washington, Us
Services Provided+29 Services
7% Mobile App Development (iOS & Android)
4% E-Commerce Development
3% API Development & Integration
3% Content Marketing Strategy
AI Summary
“Exigency is a trusted digital marketing agency that enhances brand visibility and growth for businesses nationwide, delivering impactful online results through comprehensive marketing strategies.”

...

...

...

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

S

N

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.