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

Humble Infotech
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Humble Infotech is a premier IT firm based in India, specializing in web development, mobile applications, UI/UX design, cloud services, and tailored software solutions. We at Humble Infotech are committed to ensuring that technology acts as a conduit for opportunity and innovation. Established with
Highlights
$10,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Noida, Uttar Pradesh, In
Services Provided
50% Mobile App Development (iOS & Android)
35% API Development & Integration
15% E-Commerce Development
AI Summary
“Humble Infotech is an Indian IT firm specializing in web and mobile development, UI/UX design, cloud services, and bespoke software solutions to empower businesses digitally.”
Equipm8 Digital Solutions Inc.
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Equipm8 Digital Solutions was established and is headquartered in Edmonton, Alberta. We specialize in collaborating with industrial companies to deliver tailored software solutions that align with their specific workflows. We hold a deep appreciation for Alberta's industrial sector and are passionat
Highlights
$1,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Services Provided
55% Custom Web Application Development
35% API Development & Integration
10% Mobile App Development (iOS & Android)
AI Summary
“Equipm8 Digital Solutions Inc. in Edmonton crafts customized software for industrial workflows, excelling in automated billing, asset, and project management, fostering strong client partnerships.”
Shenzhen Voidtech Co.,Ltd.
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Boasting more than 15 years of expertise, we are specialists in digital innovation, dedicated to facilitating transformation through effective web, app, and SaaS development, as well as server infrastructure, with a strong emphasis on IoT. Our reliable team provides high-quality, budget-friendly sol
Highlights
$25,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Shenzhen, Guangdong, Cn
Services Provided
30% API Development & Integration
35% Mobile App Development (iOS & Android)
35% Custom Web Application Development
AI Summary
“Shenzhen Voidtech Co.,Ltd. leverages 15+ years in digital innovation, delivering cost-effective web, app, SaaS, server infrastructure, and IoT solutions to support diverse industry clients.”
Fondostechnologies Pvt. Ltd.
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FondosTech is a leading Insurtech provider committed to transforming the insurance landscape with high-performance digital solutions. We focus on Insurance Broker Management Systems (BMS) and automated distribution platforms, helping brokers, agents, and insurers shift from disjointed manual process
Highlights
$1,000+
Min Project Size
10-49
Employees
Services Provided
35% API Development & Integration
15% Custom Web Application Development
50% Managed IT Services
AI Summary
“FondosTech delivers comprehensive digital insurance solutions including broker management, claims processing, and employee benefits portals, enabling seamless policy lifecycle management and efficient insurance distribution.”
BuildvVR Gretxp
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BuildVR is a virtual reality video platform powered by AI that enables the conversion of standard 2D videos into engaging 360° VR experiences. With features like the VR Video Converter, Depth Map Generator, and VR Video Viewer, you can easily transform regular footage into equirectangular VR, fishey
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Gurugram, Haryana, In
Services Provided
70% Custom Web Application Development
30% API Development & Integration
AI Summary
“BuildVR leverages AI to convert standard 2D videos into diverse 360° VR formats, enabling creators to produce immersive, headset-compatible content efficiently without specialized equipment.”
Adyntel
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Ad intelligence driven by API. GTM teams utilize our API to integrate ad data into Google Sheets or Clay workflows. Marketing and sales teams take advantage of it for lead scoring and prospecting as an indicator of marketing budget. Paid-media teams employ it for competitive analysis, benchmarking,
Highlights
2-9
Employees
Services Provided+1 Services
40% API Development & Integration
10% Custom Web Application Development
30% Social Media Marketing
15% Performance Marketing
AI Summary
“Adyntel provides an API delivering ad intelligence that empowers marketing, sales, and paid-media teams with data-driven lead scoring, prospecting, competitive analysis, and creative benchmarking.”
BotStar
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BotStar is a prominent player in the industry, specializing in chatbot and live chat solutions. Our primary offerings are online chatbot platforms that enable businesses to visually create, develop, and train chatbots for Messenger and websites. BotStar is ideal for online conversation designers and
Highlights
10-49
Employees
Singapore, Sg
Services Provided
20% Custom Web Application Development
30% API Development & Integration
38% Custom AI Chatbot Development
12% Conversational AI & Voice Assistant Development
AI Summary
“BotStar specializes in chatbot and live chat platforms, enabling businesses to design, develop, and deploy automated conversational solutions for customer support, sales, and marketing.”
Flux8Labs
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We are skilled professionals dedicated to turning ideas into reality. With a variety of experiences and expertise, we work together to create successful solutions for our clients.
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Gurugram, Haryana, In
Services Provided
50% Custom Web Application Development
35% API Development & Integration
15% E-Commerce Development
AI Summary
“Flux8Labs comprises skilled professionals collaborating across diverse expertise to transform innovative ideas into effective, successful solutions for clients across various industries.”
Baaz
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@baaz offers technological infrastructure that facilitates live video shopping for eCommerce retailers worldwide. With our platform, an eCommerce store can easily incorporate live shopping features into their existing website, automatically syncing with all current tools, including inventory managem
Highlights
$5,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Bengaluru, Karnataka, In
Services Provided
70% E-Commerce Development
30% API Development & Integration
AI Summary
“Baaz provides a no-code live video shopping platform seamlessly integrating with major eCommerce tools and platforms, enabling retailers worldwide to enhance their online stores.”
Lunova
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Lunova is a group of specialists prepared to meet your requirements. Regardless of the scale or intricacy of your IT project, we are equipped to manage it comprehensively—from initial concept and design to implementation and continuous support. Our in-depth experience and adaptable methodology enabl
Highlights
$10,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Krakow, Lesser Poland, Pl
Services Provided
50% Custom Web Application Development
35% API Development & Integration
15% Legacy System Modernization
AI Summary
“Lunova offers comprehensive IT services from concept to support, utilizing expert knowledge and flexible methods to deliver tailored digital transformation solutions that advance business objectives.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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