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

10Native
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10Native is a digital solutions firm dedicated to empowering businesses through innovative technology and creative services. Their services encompass mobile app development, website design, digital marketing, graphic and logo creation, and video editing. Targeting both small businesses and larger co
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+6 Services
9% Custom Web Application Development
13% Mobile App Development (iOS & Android)
1% Blockchain & Web3 Development
3% API Development & Integration
AI Summary
“10Native specializes in comprehensive digital solutions including app and web development, digital marketing, graphic design, and video editing, delivering customized, innovative services to drive business growth.”
House of WEB solutions
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House of WEB Solutions is a web development agency based in Ukraine, assisting businesses in creating high-performance websites and online shops since 2017. Our team has successfully completed over 40 projects utilizing WordPress, WooCommerce, and Laravel for clients across Ukraine, Canada, the UAE,
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
2-9
Employees
Services Provided
30% Custom Web Application Development
18% E-Commerce Development
2% API Development & Integration
50% Landing Page Design
AI Summary
“House of WEB Solutions, a Ukrainian agency since 2017, delivers custom, fast, and SEO-friendly websites including landing pages, corporate sites, and e-commerce stores using modern technologies for diverse industries.”
RuthikshaInfotech
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RuthikshaInfotech is a software development firm established in 2020 that specializes in creating customized software, mobile applications, and web solutions for businesses around the globe. We assist restaurants, startups, and large enterprises in developing scalable digital products, including foo
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Services Provided+5 Services
14% Custom Web Application Development
15% Mobile App Development (iOS & Android)
5% API Development & Integration
13% Digital Strategy
AI Summary
“RuthikshaInfotech develops custom software, mobile and web applications, and automation solutions globally, specializing in scalable, innovative digital products for restaurants, startups, and enterprises.”
3Z
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Hello! We are 3Z, a comprehensive agency partnering with forward-thinking brands. We collaborate with clients to create innovative growth strategies centered on their Brand Purpose. 3Z provides branding, development, and promotional services, delivering complete solutions. Additionally, we maintain
Highlights
10-49
Employees
Boston, Massachusetts, Us
Services Provided+6 Services
8% Custom Web Application Development
5% Mobile App Development (iOS & Android)
5% API Development & Integration
2% E-Commerce Development
AI Summary
“3Z is a company specializing in diverse industries, delivering innovative solutions and services tailored to meet various business needs with expertise and professionalism.”
Studios 8
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We observed startups deplete their budgets on agencies that made lofty promises but only provided a basic landing page. We witnessed large companies stuck in lengthy contracts lasting 18 months with no results. This inspired us to create Studios8 using a new approach: set scope, set price, and rapid
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
2-9
Employees
Ahmedabad, Gujarat, In
Services Provided+6 Services
5% API Development & Integration
9% Custom Web Application Development
4% Mobile App Development (iOS & Android)
2% E-Commerce Development
AI Summary
“Studios8 specializes in delivering rapid, fixed-price digital projects, eliminating scope creep and hourly billing to provide efficient, results-driven solutions that foster lasting client partnerships.”
Parallaxis Innovations
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At Parallaxis Innovations, we are forward-thinking digital experts providing cutting-edge IT solutions that enhance business success. With a focus on custom software, SaaS products, and AI technologies, we enable clients to confidently navigate the digital world. **Our Areas of Expertise:** - **Cu
Highlights
$5,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+2 Services
14% Custom Web Application Development
5% Mobile App Development (iOS & Android)
5% API Development & Integration
10% SaaS Product Development
AI Summary
“Parallaxis Innovations delivers custom software, SaaS, AI solutions, and IT consulting, enabling businesses worldwide to achieve digital transformation and operational excellence with innovative technology.”
ExtendFlow
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ExtendFlow is your go-to specialist for personalized Chrome Extension development. We create and implement customized browser automation solutions that assist businesses in streamlining workflows, enhancing productivity, and smoothly integrating with current systems. Our offerings encompass bespok
Highlights
Services Provided+8 Services
13% Workflow Automation (Zapier / Make / n8n)
3% Machine Learning Model Development
3% BI & Big Data Consulting & SI
8% Custom AI Chatbot Development
AI Summary
“ExtendFlow specializes in custom Chrome Extension development, offering tailored browser automation, UI enhancements, data automation, web scraping, and API integrations to optimize business workflows and productivity.”
Kaizo Digital Solutions Inc.
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KaiZo Digital Solutions develops tailored web applications, point-of-sale systems, and content management platforms for contemporary businesses. We focus on delivering scalable, user-centric solutions utilizing technologies such as React and Next.js, assisting companies in optimizing their operation
Highlights
$50-99/hr
Avg Hourly Rate
Calgary, Alberta, Ca
Services Provided+9 Services
5% API Development & Integration
9% Custom Web Application Development
4% E-Commerce Development
2% Mobile App Development (iOS & Android)
AI Summary
“Kaizo Digital Solutions Inc. specializes in developing customized, scalable web applications and systems using modern technologies to optimize business operations and enhance customer experiences.”
EMBEDTECH SOLUTIONS
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Welcome to Embedtech Solutions, where we blend innovation with top-tier IT software development and consulting services. From the beginning, our goal has been to transform the digital world, equipping businesses with state-of-the-art solutions that foster growth and success. We take pride in our ded
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Services Provided+11 Services
3% QA & Software Testing
3% E-Commerce Development
5% API Development & Integration
7% Mobile App Development (iOS & Android)
AI Summary
“Embedtech Solutions delivers innovative IT software development and consulting services, empowering businesses with reliable, cutting-edge digital solutions that drive growth and success in a technology-driven market.”
Artwork Studios
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Artwork Studios è una web agency di Milano attiva dal 1998, specializzata nella creazione di siti web, e-commerce, SEO, GEO (Generative Engine Optimization), Brand Identity, Logo Design e integrazione di intelligenza artificiale. Sviluppiamo su diverse piattaforme e tecnologie come WordPress, Webflo
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Milan, Lombardy, It
Services Provided+9 Services
7% Custom Web Application Development
2% Mobile App Development (iOS & Android)
8% E-Commerce Development
3% API Development & Integration
AI Summary
“Artwork Studios is a Milan-based web agency specializing in web development, e-commerce, SEO, brand identity, and AI integration, delivering tailored digital solutions for diverse industries since 1998.”

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Top API Development & Integration Firms

List of the Best API Development & Integration Agencies

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