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

MEF.DEV
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MEF.DEV Uni LDA specializes in providing and developing software solutions that enhance communication and IT services for businesses. Our product range features an innovative open digital BSS core, which is a unified solution for managing business processes and delivering services. Our dedicated R&D
Highlights
$100,000+
Min Project Size
$150+/hr
Avg Hourly Rate
10-49
Employees
Services Provided
70% Legacy System Modernization
30% API Development & Integration
AI Summary
“MEF.DEV Uni LDA develops open, agile software solutions and platforms that optimize business processes, digital transformation, and IT services, especially for telecom companies managing legacy BSS systems.”
Codes Technology
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Codes Technology is the perfect choice for all offshore development needs. We are a trusted software outsourcing provider, boasting a skilled team proficient in various popular technologies. Our comprehensive range of IT services covers Software Development and Web-based Technologies. We excel in nu
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Services Provided
70% Custom Web Application Development
30% API Development & Integration
AI Summary
“Codes Technology specializes in offshore software development, offering expert services in various technologies, including web and custom software development, maintenance, and cloud integration for reliable solutions.”
Tucanoo Solutions Ltd
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Tucanoo Solutions Ltd is a software development firm that focuses on creating tailored cloud-based web solutions. Since our establishment in 2011, we have developed custom software applications for a variety of industries, serving clients worldwide. As a small company, we pride ourselves on having a
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Darrington, England, Gb
Services Provided
60% Custom Web Application Development
30% API Development & Integration
10% Legacy System Modernization
AI Summary
“Tucanoo Solutions Ltd specializes in custom cloud-based software development, delivering innovative web solutions globally since 2011 with an experienced, client-focused team.”
Webnovos
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Our primary specialties include Web App Development, Mobile App Development, Front-End Development, and CMS & E-commerce solutions. We boast a proven history of delivering high-ranking web solutions. Our service offerings encompass Web Design, Web Development, Digital Marketing, Mobile App Developme
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Services Provided
70% Custom Web Application Development
30% API Development & Integration
AI Summary
“Webnovos specializes in web and mobile app development, front-end design, CMS, e-commerce, and digital marketing, delivering innovative, high-quality solutions to enhance business performance.”
CRIBSON Technologies
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Cribson Technologies is a software development firm located in Trivandrum, Kerala, India. The company focuses on creating custom software, automating business processes, developing enterprise applications, and providing IT consulting services. Their primary offerings include: - **Custom Software D
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Thiruvananthapuram, Kerala, In
Services Provided
60% Custom Web Application Development
30% API Development & Integration
10% Legacy System Modernization
AI Summary
“Cribson Technologies, based in Kerala, India, delivers custom software, business automation, enterprise applications, and IT consulting, specializing in ERP, CRM, and digital transformation services.”
Elumad
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Elumad specializes in creating tailored business software using PHP/Laravel and Filament for companies and agencies seeking dependable, security-focused systems that align with their workflows. As a partner in custom software development, we craft internal platforms, dashboards, portals, and back-of
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Almeria, Es
Services Provided
60% Custom Web Application Development
30% API Development & Integration
10% Legacy System Modernization
AI Summary
“Elumad delivers tailored PHP/Laravel software solutions with AI automation, integrating ERP/CRM systems for businesses and agencies, ensuring secure, maintainable, GDPR-compliant applications and ongoing support.”
True Syntax
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Established by a collective of young developers and business coaches in Toronto, True Syntax emerged from a mutual enthusiasm for addressing genuine digital challenges. We take pride in our city and are motivated to support both local and international businesses in succeeding online. Whether creati
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided
65% Custom Web Application Development
35% API Development & Integration
AI Summary
“True Syntax, a Toronto-based firm founded by developers and business coaches, delivers tailored websites and scalable web solutions, enhancing digital presence for local and international businesses.”
Rigby
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We develop personalized B2B and B2C platforms that accurately represent the functioning of your business. Whether you need specific features or a complete eCommerce project, our team is prepared to assist you. Rigby supports companies worldwide in launching commerce solutions suited to their respect
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
50-249
Employees
Warszawa, Masovian, Pl
Services Provided
80% E-Commerce Development
20% API Development & Integration
AI Summary
“Rigby develops personalized B2B and B2C eCommerce platforms and open-source tools, supporting global businesses with tailored commerce solutions and modular development resources.”
ClearVue Solutions
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ClearVue Solutions provides tailored IT services, ranging from cloud migration to agile frameworks. We guarantee a smooth Digital Transformation that enhances and expands your business without interruptions.
Highlights
$50,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Chennai, Tamil Nadu, In
Services Provided
34% API Development & Integration
33% Robotic Process Automation (RPA)
33% Operational Process Consulting
AI Summary
“ClearVue Solutions delivers customized IT services, specializing in cloud migration and agile methodologies to ensure seamless digital transformation and business growth without disruption.”
Retailbox
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🪐API | Integration | Automation🪐 🏆 Every business relies on various software solutions, and we are enthusiastic about the ability to consolidate all these applications into a unified IT infrastructure. This setup enables seamless communication between different software through automation and int
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
West Palm Beach, Florida, Us
Services Provided+2 Services
35% API Development & Integration
15% ERP & CRM Development
13% AI Strategy & Roadmap Consulting
15% Custom AI Chatbot Development
AI Summary
“Retailbox specializes in automating and integrating diverse software systems, enhancing business efficiency and profitability through seamless IT infrastructure consolidation and AI-driven solutions.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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