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.

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

List of the Best API Development & Integration Agencies

  1. Is this your business? Become an Edverise partner & Claim Now

    Knowledgator is an open-source machine learning research organization dedicated to enhancing human understanding through foundational models for information extraction. By prioritizing innovative research, we create machine learning solutions for information extraction that address the constraints o


    Highlights

    2-9

    Employees

    Services Provided+3 Services
    5% AI Strategy & Roadmap Consulting
    10% LLM Integration & Prompt Engineering
    15% Machine Learning Model Development
    8% Generative AI
    AI Summary

    “Knowledgator Engineering develops innovative, resource-efficient machine learning models focused on precise information extraction, advancing human understanding through foundational open-source research.”

  2. Is this your business? Become an Edverise partner & Claim Now

    TimeTrex is an all-in-one workforce management solution that offers versatile tools for tracking employee hours, attendance, payroll, and scheduling. Its cutting-edge, cloud-based services help businesses of various sizes enhance their HR functions, maintain compliance, and boost overall efficiency.


    Highlights

    10-49

    Employees

    Vancouver, British Columbia, Ca

    Services Provided
    40% API Development & Integration
    60% Custom Web Application Development
    AI Summary

    “TimeTrex provides comprehensive workforce management solutions, including time tracking, attendance, payroll, and scheduling, helping businesses improve HR efficiency, compliance, and cost savings through cloud-based technology.”

  3. Is this your business? Become an Edverise partner & Claim Now

    Zaptilo.ai is a platform for the WhatsApp Business API that allows businesses to send mass messages, automate conversations, and incorporate WhatsApp into their applications or systems. It provides features such as code-free chatbots, live analytics, and webhook integrations, ensuring smooth communi


    Highlights

    10-49

    Employees

    Bengaluru, Karnataka, In

    Services Provided
    50% API Development & Integration
    10% Generative AI
    20% CRM Consulting and SI
    20% ERP Consulting and SI
    AI Summary

    “Zaptilo.ai offers a WhatsApp Business API platform enabling businesses to send mass messages, automate chats with code-free bots, and integrate analytics for enhanced customer communication.”

  4. Is this your business? Become an Edverise partner & Claim Now

    Vibranium Bytes is a comprehensive development firm focused on creating scalable, secure, and user-friendly digital solutions. Our expertise lies in web and mobile application development, utilizing modern technologies such as React, Node.js, Laravel, and cloud services to produce high-performance p


    Highlights

    $1,000+

    Min Project Size

    < $25/hr

    Avg Hourly Rate

    Ahmedabad, Gujarat, In

    Services Provided+1 Services
    50% API Development & Integration
    15% Custom AI Chatbot Development
    13% AI Strategy & Roadmap Consulting
    10% AI Agent & Multi-Agent System Development
    AI Summary

    “Vibranium Bytes delivers scalable, secure digital solutions, specializing in web and mobile development with modern technologies, supporting startups to enterprises through tailored software and ongoing partnerships.”

  5. Is this your business? Become an Edverise partner & Claim Now

    Web Team is a software development firm focused on backend solutions, assisting fintech, e-commerce, and SaaS companies in creating dependable digital products. Located in Chisinau, Moldova, and based in Moldova IT Park, we specialize in backend engineering, API development, and intricate integratio


    Highlights

    $5,000+

    Min Project Size

    $25-49/hr

    Avg Hourly Rate

    2-9

    Employees

    Services Provided
    45% API Development & Integration
    45% Backend Development
    10% E-Commerce Development
    AI Summary

    “Web Team specializes in backend development, API integration, and payment system connectivity, delivering tailored, scalable digital solutions for fintech, e-commerce, and SaaS clients globally from Moldova.”

  6. Is this your business? Become an Edverise partner & Claim Now

    BlackShift is a specialized backend engineering firm dedicated to creating reliable systems for contemporary SaaS products. We assist growing tech companies in designing, constructing, and stabilizing the fundamental infrastructure essential for their operations—such as backend architecture, analyti


    Highlights

    $10,000+

    Min Project Size

    $50-99/hr

    Avg Hourly Rate

    2-9

    Employees

    Services Provided
    20% Custom Web Application Development
    45% API Development & Integration
    35% Backend Development
    AI Summary

    “BlackShift specializes in building robust backend infrastructures for SaaS companies, delivering scalable systems, analytics, dashboards, and integrations with a focus on reliability and operational excellence.”

  7. Is this your business? Become an Edverise partner & Claim Now

    LogicFlow AI is the leading AI Automation Agency in Adelaide, dedicated to equipping small and medium-sized businesses across Australia with state-of-the-art artificial intelligence solutions. We focus on enhancing customer interactions and improving operational efficiency with high-quality AI voice


    Highlights

    10-49

    Employees

    Services Provided+1 Services
    8% CRM Consulting and SI
    10% AI Strategy & Roadmap Consulting
    20% AI Agent & Multi-Agent System Development
    12% Custom AI Chatbot Development
    AI Summary

    “LogicFlow AI empowers Australian small and medium businesses with advanced AI solutions including voice agents, chatbots, and automations to enhance efficiency, customer experience, and reduce costs.”

  8. Is this your business? Become an Edverise partner & Claim Now

    Macrosol Technologies is an IT services provider focused on DevOps and Cloud Engineering, Website Recovery, AI/ML integration, and Enterprise Automation. We assist businesses in updating their infrastructure, minimizing downtime, and confidently scaling their operations, whether it involves restorin


    Highlights

    $1,000+

    Min Project Size

    $25-49/hr

    Avg Hourly Rate

    2-9

    Employees

    Services Provided+2 Services
    20% Cloud Consulting & SI
    8% AI Strategy & Roadmap Consulting
    5% Generative AI
    5% Custom AI Chatbot Development
    AI Summary

    “Macrosol Technologies specializes in IT services including DevOps, Cloud Engineering, AI/ML integration, and enterprise automation, helping businesses optimize infrastructure, minimize downtime, and scale effectively.”

  9. Is this your business? Become an Edverise partner & Claim Now

    Atyesboss.ai creates AI-driven chatbot solutions for WhatsApp and RCS that assist businesses in automating customer interactions, increasing lead generation, and accelerating sales. We focus on tailored chatbot workflows for various industries, including real estate, healthcare, salons, and manufact


    Highlights

    $1,000+

    Min Project Size

    2-9

    Employees

    Services Provided+2 Services
    5% Other IT Consulting and SI
    20% Custom AI Chatbot Development
    10% AI Strategy & Roadmap Consulting
    8% Generative AI
    AI Summary

    “Yes Boss Technology Pvt Ltd offers AI-driven chatbot solutions across industries like real estate and healthcare, enhancing customer engagement, lead generation, and sales via WhatsApp and RCS platforms.”

  10. Is this your business? Become an Edverise partner & Claim Now

    BrainGenz.ai is an artificial intelligence firm located in Pakistan that supports healthcare and digital health startups in the United States by automating intricate workflows with secure, HIPAA-compliant AI systems. Our expertise lies in automating clinical documentation, creating patient engagemen


    Highlights

    $1,000+

    Min Project Size

    $25-49/hr

    Avg Hourly Rate

    2-9

    Employees

    Services Provided+2 Services
    10% AI Strategy & Roadmap Consulting
    15% Custom AI Chatbot Development
    8% Cloud Consulting & SI
    5% AI Agent & Multi-Agent System Development
    AI Summary

    “BrainGenz.ai, a Pakistani AI company, delivers secure, HIPAA-compliant healthcare automation solutions including clinical documentation, patient engagement bots, and AI data assistants that enhance efficiency and patient outcomes.”

One Platform. One Promise. One Trust.

Edverise is building the trusted way to find tech vendors. List your company early, or talk to us about backing the platform.