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

Vidyayatan Technologies
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Hello! We are Vidyayatan Technologies, a certified company with ISO 9001:2015 and ISO 27001:2022 credentials, providing dependable, secure, and scalable platforms for various sectors, including fintech, edtech, agritech, hospitality, and others. Our team consists of skilled technology professionals
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Bhopal, Madhya Pradesh, In
Services Provided+3 Services
15% Custom Web Application Development
8% Mobile App Development (iOS & Android)
10% API Development & Integration
3% E-Commerce Development
AI Summary
“Vidyayatan Technologies delivers secure, scalable platforms across fintech, edtech, agritech, and hospitality, leveraging expert development and design teams to support startups and drive innovation.”
Promanage It Solution
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About Promanage IT Solution: Established in 2020, Promanage IT Solution has quickly emerged as a trusted partner for companies aiming to digitize their operations. Our mission is to empower businesses with innovative, cost-effective IT solutions that facilitate growth and enhance efficiency. Boastin
Highlights
$25,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Noida, Uttar Pradesh, In
Services Provided
23% Mobile App Development (iOS & Android)
20% Custom Web Application Development
7% API Development & Integration
50% Digital Strategy
AI Summary
“Promanage IT Solution, founded in 2020, is a global digital firm offering IT, web, mobile app development, UI/UX design, and digital marketing services to enhance business growth and efficiency.”
Affordable Applications
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We are a company located in Tamworth, focused on providing high-quality custom software solutions at reasonable rates. With a wealth of experience across different sectors and applications, we create tailored solutions specifically designed to meet your requirements. Our offerings include: websites,
Highlights
Services Provided
30% Custom Web Application Development
20% API Development & Integration
28% Web App UI Design
22% Landing Page Design
AI Summary
“Affordable Applications, based in Tamworth, delivers tailored, cost-effective custom software solutions including websites, web applications, databases, and REST APIs for diverse sectors, on cloud or on-premises.”
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SH Solutions International
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Our company engages in various areas of software development, including web development, web application creation, desktop applications, as well as accounting and finance software, and inventory and stock management solutions. We utilize technologies such as .NET Core, Angular, MEAN Stack, MERN Stac
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
Services Provided
40% Custom Web Application Development
25% API Development & Integration
15% E-Commerce Development
20% Mobile App Development (iOS & Android)
AI Summary
“SH Solutions International specializes in diverse software development services, delivering web, desktop, accounting, and inventory management solutions using modern technologies like .NET Core and MEAN/MERN stacks.”
COBAIT BANGLADESH
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At COBAIT BANGLADESH, we are dedicated to delivering the best service possible to ensure our clients' satisfaction. We offer customizable website and software development, digital marketing, search engine optimization (SEO), social media marketing, secure web solutions, IT outsourcing, cloud service
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Dhaka, Dhaka, Bd
Services Provided+8 Services
15% Custom Web Application Development
10% Mobile App Development (iOS & Android)
13% API Development & Integration
8% E-Commerce Development
AI Summary
“COBAIT BANGLADESH delivers comprehensive IT solutions including custom website and app development, digital marketing, SEO, and cloud services, ensuring secure, high-performance, and client-focused results.”
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Algovation Pvt Ltd
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We create personalized web solutions and digital tools designed specifically for your business objectives. By merging strategic insight with effective execution, we assist companies in transforming their concepts into dependable, scalable outcomes that produce tangible results.
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided
30% Software Development Services
30% Custom Web Application Development
20% API Development & Integration
20% Mobile App Development (iOS & Android)
AI Summary
“Algovation Pvt Ltd specializes in delivering tailored software solutions, excelling in custom web applications, API development, and mobile app creation, aligning perfectly with the Software Development category's scope and services.”
Black Airplane
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Black Airplane is a digital product agency designed to tackle genuine business challenges through technology. Whether you're a driven entrepreneur with an innovative concept or an industry leader seeking significant transformation, we combine profound technical knowledge with unique creativity to as
Highlights
$25,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Woodstock, Georgia, Us
Services Provided+2 Services
20% Custom Web Application Development
13% Mobile App Development (iOS & Android)
12% API Development & Integration
5% E-Commerce Development
AI Summary
“Black Airplane is a digital product agency that combines technical expertise and creativity to develop innovative solutions, helping entrepreneurs and industry leaders transform ideas into successful products.”
Z Soft Hub
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At Z Soft Hub, we hold the view that technology must be intelligent, adaptable, and oriented towards users. Our expertise lies in creating digital solutions that address genuine challenges, whether that involves bespoke software development, cloud integration, or smart automation. Our dedicated team
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Lahore, Pk Punjab, Pk
Services Provided+4 Services
25% Custom Web Application Development
15% API Development & Integration
15% Backend Development
10% AI Agent & Multi-Agent System Development
AI Summary
“Z Soft Hub excels in Software Development, offering Custom Web Application Development, API Development & Integration, robust Backend Development, and thorough Application Testing. Their services support scalable, secure, and intelligent digital solutions for diverse industries.”
Ideal User
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Ideal User is a modern web design agency that provides AI-enhanced solutions tailored for agencies, non-profits, startups, and businesses. Our team, skilled in WordPress, Shopify, Go High Level, PHP Laravel, Node.js, React, and Vue, focuses on creating scalable websites and web applications. We offe
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+1 Services
20% Custom Web Application Development
5% Mobile App Development (iOS & Android)
15% API Development & Integration
10% E-Commerce Development
AI Summary
“Ideal User is a web design agency delivering AI-enhanced, scalable websites and applications using tools like WordPress and React, serving startups, agencies, non-profits, and businesses.”
Kloner Ai
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Kloner AI is a company focused on AI technology for enterprises, specializing in Live AI Avatars and Real-Time Conversational AI systems that facilitate natural, face-to-face digital interactions between businesses and users. Our platform supports interactive digital humans, streaming AI avatars, an
Highlights
2-9
Employees
Services Provided+6 Services
5% LLM Integration & Prompt Engineering
3% AI Strategy & Roadmap Consulting
5% Generative AI
10% Custom AI Chatbot Development
AI Summary
“Kloner AI develops real-time conversational AI avatars for enterprises, enabling interactive digital human experiences across sales, support, education, and engagement via scalable, low-latency platforms.”

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Latest insights & expert perspectives

Explore data-backed surveys with inputs from top industry experts.

Minimum project sizes stated by UX audit firms listed on Edverise, with the no-minimum and $1,000 bands shaded

Vendor Selection

UX Audit Cost: Price Tables Say $8,000, Most Firms Start Lower

Agency tables put a full UX audit at $8,000 and up. 60% of 3,038 listed audit firms state a $1,000 minimum or none. Here is what to pay and what to demand.

Akash Mohapatra

11/9/2026