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

Devenets Innovation Limited
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
We are pleased to present Devenets Innovation Limited, a premier software development firm focused on creating groundbreaking solutions that transform businesses. With a strong history of producing state-of-the-art software products, we take pride in being the reliable partner for companies undergoi
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Agege, Lagos, Ng
Services Provided
35% Mobile App Development (iOS & Android)
20% API Development & Integration
35% Custom Web Application Development
10% E-Commerce Development
AI Summary
“Devenets Innovation Limited delivers tailored software development, web and mobile apps, cloud, AI, and IoT solutions, emphasizing quality, client collaboration, and agile methodologies for digital transformation.”
ADNEW
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
We provide tailored CRM (Customer Relationship Management) solutions aimed at enhancing customer relationship management by incorporating cutting-edge technology.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Lisboa, Lisbon, Pt
Services Provided+1 Services
20% API Development & Integration
14% Mobile App Development (iOS & Android)
30% CRM Consulting and SI
3% ERP Consulting and SI
AI Summary
“ADNEW delivers customized CRM solutions leveraging advanced technology to optimize customer relationship management and support business growth across industries.”
Zimalab
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Zimalab is a web development firm specializing in creating and launching web applications from the ground up, having successfully completed over 200 projects. ✅ We typically launch web products within 3 to 6 months. ✅ Our dedicated team boasts more than 10 years of experience. ✅ We deliver quick res
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Astana, Kz
Services Provided+5 Services
25% Custom Web Application Development
15% Backend Development
15% Frontend Development
15% API Development & Integration
AI Summary
“Zimalab is a seasoned web development firm delivering full-stack solutions across diverse sectors with rapid deployment, leveraging modern technologies and a skilled 35-member team for quality web applications.”
Vybrium
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
We are a group of no-code specialists dedicated to utilizing innovative tools that assist anyone with an idea in bringing it to life. Our primary areas of expertise include: 1. Webflow 2. Airtable 3. Glide (GlideApps) 4. Zapier 5. Custom API Integrations Additionally, we offer design services throug
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Warszawa, Masovian, Pl
Services Provided
33% Custom Web Application Development
17% API Development & Integration
35% Digital Strategy
15% Social Media Marketing
AI Summary
“Vybrium is a no-code specialist team skilled in Webflow, Airtable, Glide, Zapier, and API integrations, transforming ideas into functional digital solutions with design collaboration.”
Blur Effect
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
We provide software development services such as React, React Native, and Node.js. This serves as your mobile access point to organized applications, web development, NFTs, and various technology-related services. Our talented team of expert developers will elevate your projects to new heights in no
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Puerto Colombia, Atlantico, Co
Services Provided+1 Services
30% Mobile App Development (iOS & Android)
25% Custom Web Application Development
15% API Development & Integration
15% Backend Development
AI Summary
“Blur Effect offers expert software development services including React, React Native, and Node.js, delivering innovative solutions in mobile apps, web development, NFTs, and technology projects.”
DannyTheDev
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
I'm Danny, and I’ve revised this bio more times than I can count. Writing about myself is challenging, and I struggle with self-promotion. However, I’ll give it a try... I’m a 37-year-old Web Developer with over 15 years of professional experience. During this time, I’ve created custom websites, con
Highlights
$50-99/hr
Avg Hourly Rate
Southampton, Gb
Services Provided
23% Custom Web Application Development
17% API Development & Integration
10% CMS Development & Customization
50% Search Engine Optimization (SEO)
AI Summary
“DannyTheDev is a seasoned web developer with 15+ years' experience delivering custom websites, CMS, CRM software, APIs, and tailored solutions including Laravel portals and WordPress extensions.”
Abhira Nexus
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Abhira Nexus is a committed web development partner that specializes in creating high-performance WordPress solutions for businesses, startups, and agencies around the globe. Our expertise includes custom plugins, WooCommerce setups, advanced automation, API integrations, and rapid website optimizat
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided
60% Custom Web Application Development
25% E-Commerce Development
15% API Development & Integration
AI Summary
“Abhira Nexus delivers expert WordPress development services worldwide, offering custom plugins, WooCommerce, automation, and API integrations focused on scalable, efficient, and maintainable web solutions.”
Eminent Global Research & Solutions
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Eminent Global Research Solutions is swiftly becoming a prominent worldwide provider of intellectual property (IP) support services, market intelligence, and business research solutions. Our diverse clientele includes large corporations, small and medium-sized enterprises (SMEs), IP law firms, innov
Highlights
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided
18% API Development & Integration
32% Custom Web Application Development
50% Market Research & Competitive Intelligence
AI Summary
“Eminent Global Research & Solutions offers comprehensive IP support, market intelligence, business research, and software development services to diverse global clients including corporations, law firms, and startups.”
DeMeloApps
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
DeMeloApps, located in Vancouver, is a software development partner dedicated to creating strategic, scalable, and customized digital solutions. We work with a range of businesses, from startups to well-established companies, to design and create software that aligns with their specific business obj
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided
20% API Development & Integration
50% Custom Web Application Development
20% Mobile App Development (iOS & Android)
10% E-Commerce Development
AI Summary
“DeMeloApps is a Vancouver-based software development partner specializing in customized, scalable digital solutions that align with diverse business objectives, emphasizing collaboration and maintainability.”
Design N Dev
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
DesignNDev is a comprehensive web development and design agency that assists businesses in creating modern, responsive, and effective websites. We focus on technologies such as Next.js, React, the MERN Stack, WordPress, and FastAPI, providing services ranging from total website redesigns to complete
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Lahore, Pk Punjab, Pk
Services Provided
18% API Development & Integration
12% E-Commerce Development
20% Custom Web Application Development
50% Product UX Strategy
AI Summary
“DesignNDev is a web development agency specializing in modern, responsive websites and full-stack SaaS solutions using Next.js, React, MERN, WordPress, and FastAPI with cost-effective offshore teams.”

...

...

...

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.