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

Osoa Software
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Established in 2009, Osoa Software and Consulting aimed to make a significant impact in the industry. Since we began, we have built a diverse clientele and secured our position in the software market by delivering innovative solutions tailored to each client. We strive not only to meet but to surpas
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Istanbul, Istanbul, Tr
Services Provided
45% Custom Web Application Development
35% API Development & Integration
20% Mobile App Development (iOS & Android)
AI Summary
“Founded in 2009, Osoa Software delivers tailored software solutions and consulting services, leveraging innovative technologies to enhance client success and satisfaction across diverse industries.”
Kodin Soft
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We are a software development firm that focuses on advanced technological solutions. Our skills encompass full-stack software development for web, mobile, backend, and cloud-native applications. We provide a comprehensive range of software development services, including business analysis, consultin
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Sofia, Sofia, Bg
Services Provided
45% Custom Web Application Development
35% API Development & Integration
20% Mobile App Development (iOS & Android)
AI Summary
“Kodin Soft is a Bulgaria-based full-stack software development firm delivering custom web, mobile, API, and cloud-native solutions with comprehensive services and industry expertise.”
Left Hook Digital
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Left Hook Digital is a consultancy and development company that focuses on software integration. We cater to two types of clients: first, we assist businesses with their unique integration requirements and enhance their workflows; second, we support software and app companies in maximizing their API
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Durham, North Carolina, Us
Services Provided
38% API Development & Integration
12% Custom Web Application Development
50% Other IT Consulting and SI
AI Summary
“Left Hook Digital is a consultancy specializing in software integration and API optimization, serving diverse clients including Fortune 1000 companies with tailored integration solutions and workflow enhancements.”
MG
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About Us: We are a company that provides IT services focused on software infrastructure initiatives and software development. Our Customers: If you are dealing with outdated technology, spending excessive time and resources on daily operations, facing disconnected or incompatible systems and appli
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Buenos Aires, Ar
Services Provided
40% API Development & Integration
40% Custom Web Application Development
20% Legacy System Modernization
AI Summary
“MG specializes in IT services, offering software development and infrastructure solutions to optimize operations, integrate systems, and enhance organizational performance monitoring.”
Digital Matter
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Digital Matter is a prominent global provider and developer of GPS asset tracking, sensor monitoring, and advanced telematics solutions. We cater to a range of needs from vehicle and trailer tracking to supply chain and logistics management, offering the technologies businesses need to monitor their
Highlights
50-249
Employees
Daglish, Western Australia, Au
Services Provided
40% Custom Web Application Development
40% API Development & Integration
20% Backend Development
AI Summary
“Digital Matter specializes in durable GPS asset tracking and telematics solutions for vehicles and logistics, delivering reliable, high-quality technologies through comprehensive design and manufacturing expertise.”
DXB APPS
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DXB APPS is an award-winning mobile app development company in Dubai, UAE building custom Android & iOS apps with cutting-edge features and scalable solutions. With over a decade of experience and 700+ successful projects, we specialize in building custom mob
Highlights
50-249
Employees
Business Bay, Dubai, Ae
Services Provided
No services available
AI Summary
“No AI summary available for this company yet.”
AvaCode Solutions LLC
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We assist teams in transforming ideas into production-ready web and cloud applications, emphasizing quality and sustainable maintenance. Located in Dubai, we provide customized software solutions to clients worldwide, merging our Scandinavian expertise in top-tier quality standards with a dedication
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Dubai, Dubayy, Ae
Services Provided
35% API Development & Integration
65% Custom Web Application Development
AI Summary
“AvaCode Solutions LLC, based in Dubai, delivers customized, high-quality web and cloud software solutions worldwide, combining Scandinavian standards with a focus on sustainable growth and efficiency.”
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Sublime Technocorp Pvt Ltd
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Sublime Technocorp is an IT solutions company driven by technology that has established its own path in the burgeoning field of IT-enabled services for over a decade. The company specializes in development across web, mobile, cloud, and IoT platforms, as well as consultancy and IT manpower services.
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Navi Mumbai, Maharashtra, In
Services Provided
65% Mobile App Development (iOS & Android)
35% API Development & Integration
AI Summary
“Sublime Technocorp specializes in innovative IT solutions including web, mobile, cloud, and IoT development, consultancy, and IT manpower services serving global enterprises.”
HAE INNOVATIONS
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HAE Innovations is a premier provider of tailored IoT engineering solutions. With our proficiency in hardware, embedded software, and full-stack development, we offer various collaboration choices, including complete turn-key systems. Our extensive knowledge in wireless technologies such as 4G, 5G,
Highlights
$25,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Montgomery, New Jersey, Us
Services Provided
20% Custom Web Application Development
30% Backend Development
15% Frontend Development
35% API Development & Integration
AI Summary
“HAE Innovations delivers tailored IoT engineering solutions encompassing hardware, embedded software, and full-stack development, specializing in wireless technologies like 4G, 5G, Wi-Fi, BLE, and LoRa for seamless connectivity.”
e-con Systems
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Founded in 2003, e-con Systems has emerged as a prominent manufacturer of OEM cameras with a significant global presence. We offer comprehensive camera solutions, including MIPI camera modules, GMSL cameras, USB 3.1 Gen 1 cameras, stereo cameras, and others. Throughout the years, we have transformed
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
250-999
Employees
St. Louis, Missouri, Us
Services Provided
30% Custom Web Application Development
40% API Development & Integration
30% Backend Development
AI Summary
“Founded in 2003, e-con Systems designs and manufactures diverse OEM camera modules and solutions, serving global industries including retail, healthcare, agriculture, and smart cities.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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