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

NCRYPTICS
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Established in 2021, NCRYPTICS is a software development studio that focuses on automation, software architecture, and custom software solutions. We assist our clients in optimizing intricate processes, enhancing software quality, and creating dependable systems that facilitate business expansion. O
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided+2 Services
30% Custom Web Application Development
20% API Development & Integration
10% Mobile App Development (iOS & Android)
15% QA & Software Testing
AI Summary
“Founded in 2021, NCRYPTICS is a software development studio specializing in automation, software architecture, and custom solutions, delivering high-quality, agile services to optimize business processes and support growth.”
Knaus - Development s. r. o.
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A software company focused on developing B2B and B2E platforms for large organizations. Established in 2021, it works on projects in the Expert Network sector, telecommunications, and is a prominent partner in AI SaaS platforms.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
Bratislava, Bratislava, Sk
Services Provided
35% Custom Web Application Development
15% API Development & Integration
50% DevOps Engineering
AI Summary
“Knaus - Development s. r. o. is a software company established in 2021, specializing in B2B and B2E platforms across expert networks, telecommunications, and AI SaaS solutions for large organizations.”
BrickMate Group
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As entrepreneurs with a background in multiple IT startups, we have a deep understanding of the startup ecosystem. After collaborating with esteemed multi-billion dollar founders in Asia and successfully exiting two of our own startups, we set out to establish a new approach to development services
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
250-999
Employees
Ho Chi Minh City, Vn
Services Provided+1 Services
20% Mobile App Development (iOS & Android)
18% Custom Web Application Development
10% API Development & Integration
2% Legacy System Modernization
AI Summary
“BrickMate Group is a leading agile mobile and web app development agency with a strong startup mindset, collaborating globally with major brands to deliver innovative IT solutions.”
Digital Web Growth
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We are enthusiastic about engaging in Website Design, Web Development, Content Management Systems, E-Commerce Solutions, Internet Marketing, and Business Application Development.
Highlights
< $25/hr
Avg Hourly Rate
Shabajpur Khalsa, Haryana, In
Services Provided
35% Custom Web Application Development
15% API Development & Integration
50% Web App UI Design
AI Summary
“Digital Web Growth specializes in website design, development, e-commerce, content management, internet marketing, and business application development, offering comprehensive digital solutions for diverse client needs.”
Communere Ltd
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Established in 2012, Communere Ltd. is a provider of software development and data solutions, focusing on custom software and team augmentation for software development. We create high-quality, tailored applications for businesses of all sizes across diverse industries globally. Our commitment is to
Highlights
$25,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Guildford, England, Gb
Services Provided+1 Services
15% API Development & Integration
10% Mobile App Development (iOS & Android)
25% Custom Web Application Development
35% AI Strategy & Roadmap Consulting
AI Summary
“Since 2012, Communere Ltd. delivers custom software development and team augmentation services, crafting scalable, tailored applications that meet diverse client needs globally across various industries.”
Omneelab Software Solutions Pvt Ltd
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Omneelab-WMS is the premier offering from Omneelab Software Development Company Pvt. Ltd. It has garnered significant attention in the Inventory and Warehouse Management sectors and is extensively adopted as a SaaS solution by numerous multinational corporations and blue-chip firms. This AI-driven w
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
New Delhi, Delhi, In
Services Provided+1 Services
10% Custom Web Application Development
15% API Development & Integration
25% SaaS Product Development
35% Operational Process Consulting
AI Summary
“Omneelab Software Solutions Pvt Ltd offers AI-driven warehouse management software integrated with major ERPs, enabling digital transformation of supply chains for multinational and blue-chip companies.”
Desvondemand
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DevsOnDemand is a premier, comprehensive digital agency that combines top-tier software engineering with exceptional CGI/VFX production. Inspired by our founder, Moronkeji Blessing Michael, we have positioned ourselves as a worldwide leader for brands that strive for excellence. Our agency operates
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Osogbo, Osun, Ng
Services Provided+2 Services
13% API Development & Integration
2% Blockchain & Web3 Development
20% Custom Web Application Development
5% E-Commerce Development
AI Summary
“DevsOnDemand is a global digital agency specializing in high-quality software engineering and CGI/VFX production, delivering technically precise and visually remarkable digital solutions for top brands.”
Scnip
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Scnip is a leading technology company that specializes in delivering advanced information technology solutions. Our expertise includes talent outsourcing, software development services, and the creation of e-commerce websites.
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Abuja, Federal Capital Territory, Ng
Services Provided
15% Mobile App Development (iOS & Android)
15% API Development & Integration
20% E-Commerce Development
50% IT Staff Augmentation
AI Summary
“Scnip is a technology company specializing in IT solutions, including talent outsourcing, software development, and e-commerce website creation, delivering comprehensive digital services.”
Auspicious Soft Pvt Ltd
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We are a comprehensive software and app development firm that focuses on tailored web, mobile, and e-commerce solutions for startups, businesses, and expanding brands. Our team creates scalable, user-centered digital products, leveraging our knowledge in UI/UX design, SaaS platforms, mobile app deve
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Los Angeles, California, Us
Services Provided
35% Custom Web Application Development
30% Mobile App Development (iOS & Android)
15% API Development & Integration
20% E-Commerce Development
AI Summary
“Auspicious Soft Pvt Ltd delivers tailored, scalable web, mobile, and e-commerce software solutions with user-centric design, enhancing business operations and driving growth across diverse industries.”
Matellio
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Matellio is a premier software engineering studio known worldwide for its innovative solutions driven by Artificial Intelligence and Machine Learning. We focus on creating customized AI solutions that cater to the diverse needs of businesses across various industry sectors. As a prominent software d
Highlights
$100,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
250-999
Employees
Palo Alto, California, Us
Services Provided+5 Services
13% Mobile App Development (iOS & Android)
25% Custom Web Application Development
13% API Development & Integration
10% AI Strategy & Roadmap Consulting
AI Summary
“Matellio is a global software engineering firm specializing in AI-driven custom solutions, IoT, and enterprise platforms, delivering innovative, tailored software services across diverse industries since 2014.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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