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

Brevocity Solutions Group
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Brevocity Solutions Group is a reliable provider of IT outsourcing in Sacramento, focusing on cutting-edge technology solutions. We assist businesses in leveraging AI, data analytics, automation, and tailored software development to achieve tangible outcomes. Through managed services, project execut
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+3 Services
7% AI Strategy & Roadmap Consulting
4% Custom AI Chatbot Development
10% Machine Learning Model Development
4% LLM Integration & Prompt Engineering
AI Summary
“Brevocity Solutions Group delivers innovative IT outsourcing in Sacramento, specializing in AI, data analytics, automation, and custom software, offering scalable managed services and strategic staffing solutions.”
Integral Vision Ltd.
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Non-governmental organizations (NGOs) face challenges related to funding limitations, compliance obligations, and risks to their reputation. Their digital infrastructures need to be secure, reliable, and well-managed. We organize our approach with an emphasis on predictability. A consistent monthly
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Budapest, Budapest, Hu
Services Provided+2 Services
25% Custom Web Application Development
15% API Development & Integration
5% E-Commerce Development
25% Backend Development
AI Summary
“Integral Vision Ltd. partners with NGOs to deliver secure, reliable digital solutions via predictable, managed services, emphasizing sustainability, compliance, and scalable development for mission success.”
Tymon Global
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Tymon Global offers dependable IT services and digital transformation solutions designed to enhance business operations, boost efficiency, and adapt to changing market demands. Their extensive service portfolio includes enterprise application development, cloud solutions, automation, and data analyt
Highlights
$5,000+
Min Project Size
50-249
Employees
McKinney, Texas, Us
Services Provided+3 Services
15% Custom AI Chatbot Development
15% Cloud Consulting & SI
5% IT Staff Augmentation
10% Machine Learning Model Development
AI Summary
“Tymon Global delivers comprehensive IT services and digital transformation solutions, including cloud, automation, and analytics, empowering businesses to improve operations and achieve scalable growth.”
Cypherswift
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Cypher Swift is not just another IT firm; we serve as your driving force for digital transformation. Our dedicated team of experts is motivated by the goal of empowering businesses across various sectors through technology. Whether you are a startup full of innovative ideas or an established company
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided
20% API Development & Integration
60% Custom Web Application Development
20% E-Commerce Development
AI Summary
“Cypherswift drives digital transformation by delivering tailored web, mobile, software development, and marketing solutions that enhance operational efficiency and strengthen brand presence.”
The Force Code
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
The Force Code is a leading software development firm that specializes in connecting businesses with exceptional senior developers to enhance their market success—with a little assistance from us, The Force. Drawing on our expertise in web and AI product development, we provide all-encompassing solu
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Wroclaw, Pl
Services Provided+2 Services
35% Custom Web Application Development
15% API Development & Integration
13% Machine Learning Model Development
17% Custom AI Chatbot Development
AI Summary
“The Force Code delivers expert software development by connecting businesses with senior developers, offering comprehensive web and AI solutions through full project lifecycle management and ongoing support.”
AppBarry
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Our software engineering team, based in Atlanta, specializes in developing tailored web and mobile applications, cloud migrations, and software integrations. We collaborate with organizations to create customized solutions that enhance security, improve business efficiency, and boost company profits
Highlights
$5,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Atlanta, Georgia, Us
Services Provided+1 Services
30% Custom Web Application Development
25% Mobile App Development (iOS & Android)
20% API Development & Integration
15% Backend Development
AI Summary
“AppBarry is an Atlanta-based software engineering firm specializing in tailored web and mobile applications, cloud migrations, and integrations to enhance security, efficiency, and profitability using advanced technologies.”
Solac Labs
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Solac Labs specializes in creating tailored web applications, mobile apps, and SaaS platforms for entrepreneurs and businesses that have outgrown templates or never found them suitable. Each project is spearheaded and developed by a senior full-stack developer using a contemporary tech stack, includ
Highlights
$5,000+
Min Project Size
Riverside, California, Us
Services Provided
50% Custom Web Application Development
20% API Development & Integration
30% Mobile App Development (iOS & Android)
AI Summary
“Solac Labs delivers bespoke web, mobile, and SaaS solutions, emphasizing direct senior developer involvement, transparency, and tailored architecture for scalable, client-driven projects.”
DevsMonkeys
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
We are a young and highly ambitious company, consisting of two senior developers each with over 15 years of programming experience. We have extensive experience in outsourcing and take pride in having successfully completed numerous projects. Our expertise includes: - PHP and various frameworks suc
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Warszawa, Masovian, Pl
Services Provided
30% Custom Web Application Development
13% API Development & Integration
7% Backend Development
50% Web App UI Design
AI Summary
“DevsMonkeys is a skilled software development company specializing in PHP frameworks, JavaScript, AWS, and Linux, delivering quality outsourced projects through structured collaboration and support.”
Request.Coffee
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Security integrated from the start. Curiosity fostered through culture. We provide a hands-on platform for security and learning where developers, students, and teams can develop real-world skills in safe environments and create software designed to be secure from the outset. request.coffee features
Highlights
$25-49/hr
Avg Hourly Rate
2-9
Employees
Sao Paulo, Sao Paulo, Br
Services Provided+4 Services
10% AI Strategy & Roadmap Consulting
5% Custom AI Chatbot Development
13% Machine Learning Model Development
5% Conversational AI & Voice Assistant Development
AI Summary
“Request.Coffee offers a hands-on platform featuring secure development labs, CTFs, and automation to help developers and teams build, test, and deliver secure software efficiently with legal compliance.”
RedLeaf Softs
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
RedLeaf Softs specializes in high-quality software development services, helping businesses achieve digital transformation. Our skilled developers and consultants navigate the complexities of the digital world, keeping your organization at the forefront. Our Services: ▶️ **Software Development:**
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Thoothukudi, Tamil Nadu, In
Services Provided+1 Services
30% Custom Web Application Development
25% Mobile App Development (iOS & Android)
20% API Development & Integration
15% E-Commerce Development
AI Summary
“RedLeaf Softs delivers customized software development and digital transformation consulting, leveraging agile methodologies and innovative technologies for scalable, quality solutions and ongoing support.”

...

...

...

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.