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

Page / Pagesolutions
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Page / Pagesolution is a software development company based in Bosnia and Herzegovina/Slovenia, recognized for its ability to deliver secure, scalable, and innovative digital solutions. Since 2015, we have assisted startups, enterprises, and government entities across Europe and the United States in
Highlights
$50,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Sarajevo - East Sarajevo, Ba
Services Provided
20% API Development & Integration
40% Custom Web Application Development
30% Mobile App Development (iOS & Android)
10% QA & Software Testing
AI Summary
“Page / Pagesolution, established in 2015, is a software development firm delivering secure, scalable digital solutions, including custom web, mobile, cloud, AI, and GovTech platforms for diverse sectors.”
EcomShape
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
EcomShape assists IT and e-commerce companies in achieving rapid growth through SaaS cloud solutions, comprehensive custom development, and professional consulting services. Whether you require immediate cloud tools to enhance your market entry speed, a bespoke project developed from the ground up,
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Bratislava, Bratislava, Sk
Services Provided
20% API Development & Integration
40% Custom Web Application Development
30% E-Commerce Development
10% Mobile App Development (iOS & Android)
AI Summary
“EcomShape delivers SaaS cloud solutions, custom development, and consulting to IT and e-commerce companies, enhancing growth through cost-effective, efficient technology and expert system integration.”
0gaming
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
We develop your concept and enhance iGaming. We transform ideas into engaging iGaming experiences that attract players and expand your business. Reach out to us at https://wa.me/5493415592112 or email francesco@0gaming.xyz.
Highlights
$10,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Rosario, Santa Fe, Ar
Services Provided+2 Services
15% API Development & Integration
25% Custom Web Application Development
10% Mobile App Development (iOS & Android)
25% Product UX Strategy
AI Summary
“0gaming specializes in developing innovative iGaming concepts, creating engaging player experiences to help clients grow their businesses in the interactive gaming industry.”
Broos Action
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Broos Action is a prominent technology solutions provider that equips businesses with AI-driven SaaS platforms, smart APIs, and scalable cloud infrastructure aimed at fostering growth, enhancing efficiency, and facilitating digital transformation throughout Africa and beyond.
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided+5 Services
5% AI Strategy & Roadmap Consulting
5% Robotic Process Automation (RPA)
7% Custom AI Chatbot Development
5% AI Agent & Multi-Agent System Development
AI Summary
“Broos Action delivers AI-powered SaaS platforms, intelligent APIs, and scalable cloud infrastructure to drive growth and digital transformation for businesses across Africa and beyond.”
Codezens Soft Solution
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Codezens Soft Solution is an international full-stack digital engineering firm specializing in scalable web platforms, mobile applications, and sophisticated system integrations for startups, SaaS providers, and expanding businesses. We focus on creating interconnected digital ecosystems where web,
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Indore, Madhya Pradesh, In
Services Provided+1 Services
25% Custom Web Application Development
20% Mobile App Development (iOS & Android)
20% API Development & Integration
20% SaaS Product Development
AI Summary
“Codezens Soft Solution is a global digital engineering firm specializing in scalable web and mobile applications, SaaS platforms, and complex system integrations for startups and enterprises.”
GOTOMA Software House
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
GOTOMA is a well-established software development firm based in Poland. For over a decade, we have provided our clients with a digital edge through our expertise in software, QA, and DevOps engineering. The company is committed to steady growth while maintaining respect for both clients and employee
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Nowy Sacz, Lesser Poland, Pl
Services Provided+1 Services
30% Custom Web Application Development
25% Mobile App Development (iOS & Android)
20% E-Commerce Development
15% API Development & Integration
AI Summary
“GOTOMA Software House, based in Poland, specializes in software, QA, and DevOps engineering, delivering scalable digital solutions with flexible engagement models and a focus on long-term client partnerships.”
Hackrowd Technology
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Hackrowd Technology is a top cybersecurity firm located in Lagos, Nigeria, dedicated to assisting businesses in safeguarding their digital assets. Established by a group of certified ethical hackers and cybersecurity experts, Hackrowd focuses on penetration testing, vulnerability assessments, social
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided+2 Services
20% API Development & Integration
30% Mobile App Development (iOS & Android)
10% Managed IT Services
10% Disaster Recovery & Business Continuity Planning
AI Summary
“Hackrowd Technology is a Lagos-based cybersecurity firm specializing in penetration testing, vulnerability assessments, and security monitoring to help organizations safeguard digital assets and comply with standards.”
WesternDeal Web Solutions
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
WesternDeal Web Solutions is a professional WordPress development agency located in Surat, India, and caters to clients worldwide, including the USA, UK, Canada, and Australia. We focus on custom WordPress website creation, WooCommerce e-commerce solutions, website redesigns, speed optimization, and
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided+1 Services
20% API Development & Integration
15% Custom Web Application Development
15% E-Commerce Development
30% Web App UI Design
AI Summary
“WesternDeal Web Solutions, based in Surat, India, delivers custom WordPress development, eCommerce solutions, website optimization, and advanced integrations to global clients, emphasizing quality and scalability.”
Best Byte
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
Transitioning from disconnected tools to scalable processes, Best Byte is a standalone technology partner focused on software selection and AI automation for mid-sized businesses and growing companies.
Highlights
$5,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
2-9
Employees
Services Provided+2 Services
20% API Development & Integration
30% Custom Web Application Development
5% Other IT Consulting and SI
20% Custom AI Chatbot Development
AI Summary
“Best Byte partners with mid-sized and growing businesses to streamline operations through expert software selection and AI automation, fostering scalable and efficient technological solutions.”
UA Labs
View Profile Visit Website
Is this your business? Become an Edverise partner & Claim Now
UA Labs is a development partner that prioritizes AI, dedicated to creating high-quality, scalable platforms that revolutionize businesses. **Our Mission** At UA Labs, we focus on developing platforms that not only address present requirements but also grow alongside your business. We integrate
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Sheridan, Wyoming, Us
Services Provided+3 Services
20% Custom Web Application Development
18% API Development & Integration
7% E-Commerce Development
5% Legacy System Modernization
AI Summary
“UA Labs is a development partner specializing in AI-driven, scalable platforms using modern technologies like Node.js, React.js, and automation to deliver quality, innovative business solutions.”

...

...

...

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.