Top API Development & Integration Companies

A high-performing API Development & Integration solution can accelerate growth, boost customer engagement, and create new revenue streams—but only if it's built by a team you trust. Edverise makes it easy to connect with leading API Development & Integration companies around the globe. Every profile sets out services, pricing, locations, and past work so you can compare on evidence. Use Edverise's filters to sort partners by budget, industry expertise, and location. Start comparing profiles to find the right match for your project.

How this list is built

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

8,618 Companies

List of the Best API Development & Integration Agencies

STWIN SPARX PVT LTDProfile set up by Edverise AI
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Established in 2019, STWIN SPARX PVT LTD is a comprehensive IT and BPO solutions provider committed to fostering the growth of startups and small to medium-sized enterprises throughout India. With a strong expertise in both technology and business, we focus on creating scalable digital solutions tha
Highlights
$1,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
10-49
Employees
Udaipur, Rajasthan, In
Services Provided+1 Services
23% API Development & Integration
10% E-Commerce Development
18% Mobile App Development (iOS & Android)
32% Web App UI Design
AI Summary
“STWIN SPARX PVT LTD, established in 2019, offers comprehensive IT and BPO services including digital solutions and business process outsourcing to support startups and SMEs across India.”
TruGen AIProfile set up by Edverise AI
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TruGen AI is a business-oriented AI platform that creates highly realistic AI agents featuring lifelike appearances, voices, and visual capabilities. Our AI teammates participate in live video calls, carry out workflows, collaborate with teams, and accumulate knowledge that improves over time. Wheth
Highlights
10-49
Employees
South Plainfield, New Jersey, Us
Services Provided+2 Services
35% AI Agent & Multi-Agent System Development
10% Custom AI Chatbot Development
5% AI Strategy & Roadmap Consulting
25% API Development & Integration
AI Summary
“TruGen AI develops realistic AI agents that engage in live video calls, automate workflows, collaborate with teams, and enhance processes across sales, recruitment, onboarding, and coding.”
Task4ITProfile set up by Edverise AI
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WordPress Development Agency specializing in custom WP Theme creation. Our talented team operates out of Lisbon and London, collaborating with startups, digital agencies, and established businesses. We focus on innovative WordPress solutions, crafting corporate themes from the ground up that are fle
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
2-9
Employees
Lisboa, Lisbon, Pt
Services Provided
45% Custom Web Application Development
25% API Development & Integration
30% E-Commerce Development
AI Summary
“Task4IT is a WordPress development agency specializing in custom themes, leveraging modern technologies to provide scalable, tailored digital solutions for startups and established businesses.”
QalbIT Infotech Pvt LtdProfile set up by Edverise AI
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Are you in search of a team that consistently provides top-notch web and mobile solutions on schedule? With over 10,000 hours of work completed and more than 100 five-star reviews on Upwork, we are prepared to bring your ideas to life. We are a Top Rated Plus Agency with a perfect Job Success Score
Highlights
< $25/hr
Avg Hourly Rate
10-49
Employees
Ahmedabad, Gujarat, In
Services Provided
30% Custom Web Application Development
15% API Development & Integration
5% E-Commerce Development
50% Web App UI Design
AI Summary
“QalbIT Infotech Pvt Ltd specializes in delivering timely, high-quality web and mobile solutions globally, leveraging technologies like Node.js, Laravel, React, WordPress, and Flutter since 2018.”
PecodeProfile set up by Edverise AI
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Pecode is a software development firm with over 8 years of experience and a solid track record. With a team of 160 technical experts located globally, we seamlessly integrate into projects to assist startups at any phase and work alongside small to medium-sized businesses. We also provide white-labe
Highlights
$10,000+
Min Project Size
$25-49/hr
Avg Hourly Rate
50-249
Employees
Lviv, Lviv, Ua
Services Provided
30% Custom Web Application Development
15% API Development & Integration
5% QA & Software Testing
50% Other Design
AI Summary
“Pecode delivers custom web development, API integration, application testing, and UX/UI design, providing scalable, secure, and user-centric software solutions across diverse industries.”
M
Mindful paymentsProfile set up by Edverise AI
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At Mindful Payments, we specialize in payment systems. Whether you are transitioning from an outdated infrastructure, need to adopt the latest standards in contactless payments, or require integration of a payment gateway into your system, we are here to assist you in successfully completing your pr
Highlights
$5,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Madrid, Madrid, Es
Services Provided
50% Custom Web Application Development
20% Mobile App Development (iOS & Android)
25% API Development & Integration
5% E-Commerce Development
AI Summary
“Mindful Payments delivers comprehensive payment system solutions, supporting transitions from legacy infrastructure, implementing modern contactless standards, and integrating payment gateways to ensure project success.”
Eura7 Software HouseProfile set up by Edverise AI
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We are a software company dedicated to delivering services efficiently. Our main focus is on developing custom web systems and landing pages for loyalty programs, lotteries, and online contests. We excel in integrating our software with a variety of systems, including marketing automation, payment s
Highlights
$1,000+
Min Project Size
< $25/hr
Avg Hourly Rate
10-49
Employees
Krakow, Lesser Poland, Pl
Services Provided+1 Services
25% Custom Web Application Development
20% API Development & Integration
5% Mobile App Development (iOS & Android)
30% Product UX Strategy
AI Summary
“Eura7 Software House specializes in custom web systems and integrations for marketing, payments, and management platforms, offering reliable, efficient software solutions with a seven-year warranty.”
Delta SoftwareProfile set up by Edverise AI
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Delta Software, located in Bucharest, is a software development firm that specializes in affordable outsourcing solutions. We link businesses with premier developers from Eastern Europe, providing high-quality, scalable, and sustainable code. Our client-centric strategy guarantees quick delivery whi
Highlights
$5,000+
Min Project Size
$50-99/hr
Avg Hourly Rate
10-49
Employees
Services Provided
25% Mobile App Development (iOS & Android)
50% Custom Web Application Development
25% API Development & Integration
AI Summary
“Delta Software, based in Bucharest, offers affordable outsourcing by connecting businesses with top Eastern European developers, delivering scalable, high-quality software solutions that reduce costs and improve profitability.”
PendoahProfile set up by Edverise AI
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Pendoah is a Houston-based software company that assists businesses across North America in transforming product strategies into fully operational systems with measurable results. We partner with leaders in sectors such as healthcare, finance, energy, public services, and SaaS who require more than
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
50-249
Employees
Houston, Texas, Us
Services Provided+10 Services
15% QA & Software Testing
20% API Development & Integration
15% Custom Web Application Development
3% Generative AI
AI Summary
“Pendoah is a Houston-based software firm specializing in AI strategy, custom product development, and operational systems that deliver compliant, scalable, and measurable outcomes for various industries.”
Vstorm (Leading AI Agent Company)Profile set up by Edverise AI
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Vstorm assists mid-market challengers in their transition to Agentic AI, enabling them to outperform competitors and streamline business processes with the established TriStorm Agentic AI delivery framework. The company provides a reliable return on investment thanks to the practical implementation
Highlights
$10,000+
Min Project Size
$100-149/hr
Avg Hourly Rate
10-49
Employees
Wroclaw, Lower Silesian, Pl
Services Provided+4 Services
10% AI Strategy & Roadmap Consulting
15% LLM Integration & Prompt Engineering
13% Custom AI Chatbot Development
7% Machine Learning Model Development
AI Summary
“Vstorm empowers mid-market businesses to excel by deploying Agentic AI solutions through its TriStorm framework, leveraging expert teams to enhance efficiency and competitive advantage.”

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