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.

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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

Nicety AI (a division of Nicety Brand Management)
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Nicety AI, a branch of Nicety Brand Management, is a pioneering tech company based in South Africa that focuses on creating B2B2C API solutions powered by Generative AI. Our primary aim is to integrate cutting-edge artificial intelligence and machine learning technologies to deliver distinctive, imp
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Services Provided+2 Services
25% API Development & Integration
20% Generative AI
5% AI Strategy & Roadmap Consulting
25% Digital Strategy
AI Summary
“Nicety AI, a South African tech division of Nicety Brand Management, develops Generative AI-powered B2B2C API solutions to empower African businesses with innovative digital tools for growth and transformation.”
App Arch
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AppsArchs is a performance-focused app development firm that specializes in creating scalable mobile applications and backend solutions. We assist startups, telecom firms, and large enterprises in transforming their ideas into impactful digital products. From the initial concept to the final deploym
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Rawalpindi, Pk
Services Provided
50% Mobile App Development (iOS & Android)
10% E-Commerce Development
20% API Development & Integration
20% Custom Web Application Development
AI Summary
“AppsArchs is a performance-driven app development company delivering scalable mobile and backend solutions for startups, telecoms, and enterprises, transforming ideas into impactful digital products.”
MGLogics
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MGLogics is a prominent e-commerce software development firm focused on its mission to help medium-sized retail clients tackle their most significant business challenges through cutting-edge technology solutions. The company specializes in sectors such as Furniture, Apparel, Sporting Goods, Grocery,
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Broadlands, Virginia, Us
Services Provided
60% E-Commerce Development
25% Custom Web Application Development
15% API Development & Integration
AI Summary
“MGLogics specializes in custom e-commerce software solutions and system integrations, partnering with major platforms to optimize retail operations and enhance customer experiences across diverse sectors.”
Flash Web
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We are a group of technical experts focused on creating digital solutions for businesses and technology startups. Our team consists of over 20 skilled professionals in this field. We collaborate with clients globally, including both government entities and private organizations. Our aim is to provid
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Kyiv, Ua
Services Provided
50% Custom Web Application Development
20% Mobile App Development (iOS & Android)
20% API Development & Integration
10% E-Commerce Development
AI Summary
“Flash Web is a global team of 20+ technical experts delivering digital solutions to businesses and startups, combining technical knowledge with extensive project experience.”
SukhNexus IT Solutions
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SukhNexus IT Solutions is a web development agency focused on technology, offering Laravel-based software solutions tailored for startups, agencies, and expanding businesses. We assist companies in transforming their ideas into dependable, scalable, and secure digital products that drive substantial
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Bathinda, Punjab, In
Services Provided+2 Services
15% Custom Web Application Development
13% API Development & Integration
10% SaaS Product Development
10% Backend Development
AI Summary
“SukhNexus IT Solutions specializes in tailored Laravel-based software, PHP, WordPress, and Shopify development, delivering scalable and secure digital products to support business growth across startups and enterprises.”
Talenting Software
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We assist software companies by establishing remote development teams that integrate seamlessly into their own operations. Our approach involves collaborating with top talent from our Software Development Center in Brașov, Romania, and our office in the Netherlands. At Talenting Software, we value t
Highlights
$25-49/hr
Avg Hourly Rate
10-49
Employees
Brasov, Brasov, Ro
Services Provided+1 Services
20% Custom Web Application Development
15% API Development & Integration
10% SaaS Product Development
5% Legacy System Modernization
AI Summary
“Talenting Software builds expert remote development teams, leveraging over 25 years' software experience and nearshoring expertise in Romania to deliver seamless integration and outstanding products.”
Kognify Matrix Labs
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Kognify Matrix Labs is a dedicated partner in AI and data engineering, creating comprehensive solutions to address intricate business issues. We enable businesses to harness the full capabilities of their data by developing tailored machine learning models, efficient data pipelines, and smart automa
Highlights
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided+3 Services
15% Custom Web Application Development
20% API Development & Integration
15% SaaS Product Development
13% AI Agent & Multi-Agent System Development
AI Summary
“Kognify Matrix Labs specializes in AI and data engineering, delivering tailored machine learning, data pipelines, and automation to transform data into actionable business insights enhancing efficiency and competitiveness.”
SBase
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🏆 If the 10,000-hour rule holds true, we possess more than double the necessary expertise of seasoned engineers, boasting over a decade of experience in web development. 🥇 As Top Rated Plus Experts, our aim isn’t just to maintain a 9 to 5 routine; we're dedicated to helping your business thrive.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+2 Services
40% Custom Web Application Development
20% API Development & Integration
20% Backend Development
10% Frontend Development
AI Summary
“SBase, with over a decade of expertise, delivers reliable web development and comprehensive software solutions across e-commerce, fintech, and diverse industries, fostering long-term client partnerships.”
Intent Solutions
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Intent Solutions is a software development firm based in Ukraine that acts as a technology partner for businesses aiming to create, enhance, and expand their SaaS products, custom web platforms, mobile applications, and eCommerce solutions. Since 2013, we have provided support to startups, growing e
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Kharkiv, Kharkiv, Ua
Services Provided
25% E-Commerce Development
30% Mobile App Development (iOS & Android)
15% API Development & Integration
30% Custom Web Application Development
AI Summary
“Intent Solutions, a Ukraine-based software firm since 2013, delivers custom SaaS, web, mobile, and eCommerce development with expert teams, supporting global clients through end-to-end product lifecycle management.”
Krasty Soft
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We create tailored software and AI-driven solutions that provide a competitive edge instead of adding technical debt. Krasty Soft has successfully worked with companies in healthcare, fintech, SaaS, and eCommerce that require complex systems developed correctly from the start. Our clients approach u
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Kyiv, Ua
Services Provided+2 Services
25% Custom Web Application Development
15% API Development & Integration
10% Backend Development
15% AI Strategy & Roadmap Consulting
AI Summary
“Krasty Soft delivers tailored software and AI-driven solutions across healthcare, fintech, SaaS, and eCommerce, focusing on strategic, timely, and reliable development with expert engineering teams.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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