6 Best React.js Companies for Stunning Front-End Websites in 2023

React.js development companies can do much more than build an interactive front-end for a website. Here’s everything these 6 software agencies can do for you.

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by Matias Emiliano Alvarez Duran


They say looks don’t matter. But have you ever tried to use a website that’s overly crowded with text—in multiple fonts and sizes—and takes ages to load? Sure, even in software development, it’s what’s on the inside that counts, but first impressions are still important!

If you want to build eye-catching, high-performing, and modular front-end applications, you need to use React.js. We’ve compiled a list of the 6 best React.js companies you can use to get killer mobile and web applications—according to the amount of in-house expertise you have and the level of control you need over your project. 

Ready to build your own custom software with a team that cares about you and your processes? We’re not code monkeys, we care about you.

Table of contents

How to choose React.js development services

React.js is an open-source JavaScript library for front-end development. Source: Dev.to

Libraries are constantly evolving, but they’ll always follow the logic and functions of the programming language they’re based on. React.js is built on top of JavaScript, so you need to look for a company that truly understands the language’s nuances. To choose a company with React.js development services, you should:

  1. Choose your support model

  2. Do a background check

  3. Speak to the team

1. Choose your support model

Whether you have a specific project or a whole range of objectives, an overworked developer team or no in-house expertise, you can choose software development companies with different levels of support:

  • Consultancy. You hire React.js experts to give you advice on how to approach or solve technical issues. This approach is completely hands-off: they help you with the strategy, but you handle the implementation. For example, you could ask consultants about the best React.js frameworks to use on your project. 

  • Outsourcing. You hand over the project and let the agency do its thing. For this, you don’t need any in-house expertise, but you do relinquish control over the project. The company will share deliverables in milestones—and review certain features before launching—or as a finished platform. The issue with outsourcing is that it can result in a "black box" project—i.e. you can’t make any adjustments until the tool is done.

  • Staffing. The agency recruits and hires developers for you, but you have to manage and sometimes even train them yourself. You keep full ownership of the development but it can be pricey as you have to onboard them and pay full salaries.

  • Team augmentation. You get a dedicated, self-organizing pod of engineers that integrates into your in-house team. You retain ownership and benefit from external expertise and guidance. Plus, these pods usually come with project managers and quality assurance experts, so you only need to be as involved in the development process as you want.

2. Do a background check

Out of the hundreds of software development companies that you can choose from, most of them are qualified to provide you with working software. But it’s not guaranteed. Sometimes you get a fast, cost-effective, and functional software solution, but it has a huge technical debt. Then, when you get new developers to maintain the application and fix bugs, you end up having to refactor or migrate the app to a different language or server. To avoid that, always check the company’s references, past work on web development with React.js, industry experience, and reviews. You can usually access this information on their Clutch.co's profile.

3. Speak to the team

The best way to know if a company is a right fit for your project is by jumping on a call with them. Get to know who’s behind the company, what are their values, and how they communicate and operate. Ask questions about specific case scenarios that you imagine happening. For example, if you’re worried about them being in a different time zone, this is the place to talk about potential workarounds and see how they’ve done it in the past. 

The main reason people choose NaNLABS over other equally qualified agencies is that we truly care about your project and business needs. We won’t patch up your software to make it work temporarily, we’ll advise you on how to fix the root cause of issues and keep improving your software over time. If you want to know how we work, let's chat!

6 Top React.js development companies to make your project more efficient 

To hire a React.js development company, they need to have the expertise and a matching culture. So, we’ve compiled a list of six of the best React.js companies for web app development around the globe to help you make a decision. These are:

  1. NaNLABS


  3. Halo Lab

  4. Imaginary Cloud

  5. Capital Numbers

  6. IT Consultis

1. NaNLABS: Best for team augmentation

NaNLABS is a globally-serving, Argentina-based Agile software development company. It was founded in 2013 and offers teams of English and Spanish-speaking engineers. We’ve worked with clients from multiple industries such as retail, marketing, cybersecurity, and real estate. 

We’re people-centric and love to build strong relationships with our clients. We take pride in not treating our clients as mere numbers (hence the NaN in our name) but rather as valued partners. Our approach involves getting to know your business objectives and processes so that we can tailor our solutions to help you achieve your goals. Plus, we merge with your team to deliver high-performing applications.

Support models

We’re small enough to care but big enough to deliver three different support models that can be tailored to your project:

  • Team augmentation. We provide you with a team of self-organizing software engineers that work side-by-side with your in-house team. You maintain full ownership of the project as we invite you to Agile ceremonies and share sprint deliverables. 

  • MVP development. You have an idea or a prototype and we bring it to life for you. We handle the scope, design, development and launch, working with you along the way to get to a functional MVP that’s free from technical debt.

  • Consulting services. We listen to your business needs, review your code, help you choose a tech stack, or come up with ideas to fix your ineffective workflows. You handle the implementation in-house or we can do it for you. 

Areas of expertise

With more than 10 years of practice under our belts, we’re JavaScript experts. So, we’re also highly skilled in React.js, Node.js, Express.js, Next.js, Angular, and TypeScript to name a few. 

We’re also experts in Amazon Web Services (AWS) cloud and tools, progressive web apps (PWA), SEO-friendly applications, mobile app development, and machine learning algorithms. And, React Native, Kubernetes, Python, Java, and Spring MVC.

Recent work

  • WootCloud. We managed to clean this Node.js enterprise application without hurting the user experience (UX). We helped WootCloud redesign its architecture to prepare the app for growth and improved the user interface (UI). We used tools like React.js, MongoDB, and AWS Lambda to make it happen.

  • HyreCar. We helped HyreCar get ready to scale. So, we migrated from a monolithic to a microservices architecture using GraphQL, React.js, Redux, Apollo, and AWS Amplify.

  • Popr.ai. We turned this prototype into an automated personalized GIF generator. We designed and built this MVP as well as a Google Chrome extension using Node.js, React.js, Nest.js, MongoDB, and AWS Lambda.


Our clients like working with us because we take time to truly understand their needs and work hard to live up to their expectations.

NaNLABS was named Argentina's leading web development agency in the 2021 Leader Awards on Clutch.co. We’re also one of TheManifest’s top 20 Best Software Development Companies in Argentina. 

Here’s how clients rank our services:

Ready to build your own custom software with a team that cares about you and your processes? We’re not code monkeys, we care about you.

2. INOXOFT: Best development company with industry certifications

Source: ContactCenterWorld.com

INOXOFT is a software development company based in Philadelphia, USA. This company is a certified partner of Google Cloud, Microsoft, ISO 27001, and ISTQB. INOXOFT was founded in 2014 and has over 200 employees. It also has a large portfolio mixed between startups and already established companies. And, usually focuses on industries like healthcare, fintech, logistics, real estate, and education.

Support model

INOXOFT team offers three different support models depending on the client’s business needs:

  • Rent-a-team. This is their outsourcing model. Basically, you work together to determine the project scope and details, and they get back to you with a finalized software product. 

  • Project team. With this service, you get an offshore extended IT staff to work alongside your in-house development team. It’s a human version of a plug-and-play solution as you won’t have to spend too much time onboarding them. With this INOXOFT model, you’re not encouraged to make changes during the development. 

  • Dedicated team. Similar to the previous one, but aimed at long-term projects where you’re looking at potential scaling opportunities. This dedicated software development team follows a continuous iteration mindset and admits frequent changes. With this model, you pay the salaries of the people on your team.

Areas of expertise 

INOXOFT has over eight years of experience in React.js, React Native, Flutter, Django, .NET Core, and custom mobile Android and iOS development. 

Recent work

  • Custom software development for a real estate company. INOXOFT developed a new website and mobile app that could both serve as a marketplace and a booking engine for real estate properties. They used React.js, Django, and AWS to name a few.

  • NFT marketplace for Sandmilk. INOXOFT created an easy-to-use NFT authentication web platform that didn’t require users to do any blockchain-related tasks. INOXOFT used many tools in this case including: Node.js, React.js, AWS, Biconomy, and Typescript.

  • Learning management system for an educational company.This client needed INOXOFT to help them create more features and automate manual and time-crunching tasks. They achieved that by building a Python (Django), React.js, Canvas, and Ruby On Rails interactive website.

INOXOFT reviews

Clients have great things to say about INOXOFT, especially in terms of its attention to detail and responsiveness. 

“We like their expertise and attention to detail. They were dedicated and responsive to our requests,” shared Josh Butler, COO at a recruitment agency on Clutch.co.  

Here’s how they’re ranked online:

3. Halo Lab: Best for design-first development

Source: Halo-Lab.com

This Ukraine-based company follows a design-driven approach to web software development. This is a full-service software agency that’s focused on providing top-notch user experience as well as developing high-functioning code. Halo Lab was founded in 2013 and has worked with many different industries that vary from construction to personal care. 

Support model

Halo Lab offers a full-cycle development in an augmented team model. This means they’ll provide a complete engineering pod to work next to your in-house developers on the:

  • Discovery

  • Design

  • Development and testing

  • Q&A

  • Release

  • Marketing

Areas of expertise 

Halo Lab is highly experienced in providing a smooth and stunning UI/UX design. But that’s not all they can do, they’re also highly skilled in multiple technologies, including: React.js, Redux, Nest.js, Gatsby.js, Node.js, MongoDB, Express, Node.js, Sanity, and WordPress.

Recent work

  • Raven. This is a leading E-sports clothing brand. They needed to redevelop the website they had since 2014. Raven wanted to make the site embody the brand. So, Halo Lab created interactive 3D models and 360 views—among other changes—using React.js, Redux, WordPress, AWS, Three.js, and WebGL.

  • We-go.This is an Asian wellness center for children and mothers. We-go needed a new, globally accessible, website and Halo Lab was in charge of that change. They manage to complete the assignment using Next.js, React.js, Node.js, and Prismic.

  • Kinetik.Care. Kinetik connects patients, doctors, and medical transportation drivers to provide efficient non-urgent medical transportation. Halo Lab developed the website and mobile app using React.js, Redux, Redux-saga, Mui, and Luxon.

Halo Labs reviews

People enjoy working with Halo Lab because its workflow makes things clear and productive, and its designers are highly talented. “The workflow is really efficient and both the PM and designer ask great questions,” explained the Co-Founder & Chief Product Officer at a B2B eCommerce platform on Clutch.co.

Here’s how they’re ranked online:

4. Imaginary Cloud: Best for technical debt-free platforms

Source: ImaginaryCloud.com

Imaginary Cloud is a London-based software development company that promises high-performing, robust, and “technical debt-free” software. It has over 12 years of experience and multilingual speaking teams that are proficient in English, Spanish, French, and Portuguese. It has experience working with many industries, including education, energy, finance, government, transportation, and sports.

Support model

Imaginary Cloud will adapt to your software needs so you can be hands-on or off when hiring one of these three different services:

  • Product ideation. You get them to determine the scope of your project, write the product design roadmap, or research your idea to validate your MVP.

  • Product development. Imaginary Cloud will do web, mobile, data science, and AI-based, or UI/UX development. 

  • Product improvement. Get someone to audit your code and UX so you can improve it and provide a better application to your customers. 

Areas of expertise 

Imaginary Cloud has experience using multiple technologies like React.js, Nest.js, Angular, Node.js, Django, React Native, Flutter, and Python. Design tools such as Figma, Photoshop, and Illustrator. And, cloud providers like AWS, Azure, and Google Cloud.

Recent work

  • Elephants Don’t Forget. This business platform uses artificial intelligence (AI) to analyze how people learn and retain role knowledge. They needed to improve the platform’s UX and got Imaginary Cloud to do it using React.js, amCharts, Redux, and MUI.

  • NotaryCam. This tool lets you sign and notarize documents online. It was a cool product, but the website wasn’t intuitive enough. They reached out to Imaginary Cloud and it improved the website’s UXusing WordPress and React.js.

  • Mucho. This app creates a grocery list for users based on recipes they like. This was a two-part collaboration between Imaginary Cloud and Much. The first time, Imaginary Cloud revamped the website; and the second time, they designed the prototype for the mobile app. They did it using Objective-C and Swift. 

Imaginary Cloud reviews

Imaginary Cloud’s clients love that they’re responsive and always meet deadlines. “They always deliver on time and are very responsive to changes in scope,” said Edoardo Paluan, Co-Founder and CPO at Lotto Billions on Clutch.co.

Here’s how they’re ranked online:

5. Capital Numbers: Best for leading digital transformations

Source: G2.com

Capital Numbers is an Indian software development company with over 10 years of experience. This company adapts to 13 different time zones to serve global clients and has worked with over 250 businesses from startups to enterprises. Capital Numbers focuses mostly on four industries: retail, fintech, healthtech, and edtech. This company offers digital transformation consulting services for businesses that want to start automating processes.

Support model

If you’re thinking about working with Capital Numbers, these are the types of engagement models they offer:

  • Fixed Cost. Capital Number commits to delivering a software product on an agreed deadline and with a fixed budget.

  • Time and Material (T&M). In this model, developers work by the hour and you get billed for the amount of time they’ve worked. 

  • T&M with a Cap. Same as the previous model, but you set a spending limit to avoid running over budget.

  • Staff Augmentation. This model is like hiring temporary employees. Capital Numbers provides you with developers that you can use to fill time-bound or skills gaps. 

  • Dedicated Development Team. In this service, Capital Numbers takes over the complete development of a project from start to finish. With this model, you get a complete engineering team (depending on your needs) to work with your in-house developers. 

Areas of expertise 

Capital Numbers specialized in multiple different technologies including PHP, Laravel, CodeIgniter, Symfony, Python, Node.js, and React.js.

Recent work

  • Betting odds matcher.This online betting needed to embed an oddsmatcher and a dutching calculator so they hired Capital Numbers. This company managed to complete the requests by managing Jira tickets, building an ATM oddsmatcher, and creating APIs using React.js and Django.

  • UI/UX development for data science SaaS.This data science app already had a functional back end but needed a user-friendly front end. Capital Numbers designed the UI with ReactJS, Redux toolkit, TypeScript, and Storybook.

  • UI/UX redesign for online marketplace.This virtual marketplace is for students to sell, buy, or access notes and class materials. The site was already functional but didn’t have a nice or friendly UI, so Capital Numbers redesigned it using React.js, Stripe, and Vue.js.

Capital Numbers reviews

Clients love to work with Capital Numbers because their developers provide high-quality and easy-to-read code. “I’m a developer and I review their code daily. 95% of the time, they’ve used best practices on their tasks. Their code is well-written and easy to follow,” shared the owner and lead developer at a Shopify web development company on Clutch.co.

Here’s how they’re ranked online:

6. IT Consultis: Best consulting partner for opening Chinese ventures

Source: BrandsVietnam.com

IT Consultis is a Chinese consulting and development company with over 12 years of experience. It’s mostly specialized in leading digital and omnichannel transformations and building business tools for Fortune 500 companies. IT Consultis has built multiple solutions for businesses and their sales, marketing, IT, logistics, and eCommerce departments. 

Support model

When you work with IT Consultis, you can pick one of these service models: 

  • Consultancy. IT Consultis understands how hard it can be to embrace digital transformation, so they advise you on how to do it from strategy to implementation. Plus, they can audit your processes and give you pointers for improvement. They also offer consulting services to marketing and CRM implementations. 

  • Tailor-made software enablers. IT Consultis is focused on building ecommerce enablers and connections for Chinese-based and popular tools like WeChat. In this model, they’ll develop these ecommerce and marketing assets for you. 

  • Dedicated digital teams. This company won’t provide you with an extended software development team but will help you recruit the right people for your projects. They find people for software development projects that last from six months to a year.

Areas of expertise 

IT Consultis is highly skilled in many different technologies. These are a few JavaScript, Node.js, React.js, PHP, HTML5, MySQL, NGINX, CloudFlare, Alibaba Cloud, Ubuntu, Redis, Kotlin, React Native, and Vue.js.

Recent work

  • Website revamp for ESSCA. This French business school had a website that was not mobile responsive and had an outdated design. IT Consultis built a mobile responsive website with a new design using React.js and Docker. 

  • Platform consolidation for AmCham Shanghai.The American Chamber of Commerce in Shanghai had a website with an old look and feel. AmCham also had allthe web pages hosted on different platforms (some on WordPress, the CMS, or Drupal). IT Consultis redefined the sitemap, consolidated the pages, and changed the design using React.js, Drupal, and a headless CMS. 

  • Omnichannel loyalty program for BASF. This chemical producer needed to reach non-techies Chinese farmers. ITConsultis studied the market and came up with an easy-to-use WeChat Mini Program and a hybrid platform for this target audience. For these tools, they used Laravel, React Native, and React.js. 

IT Consultis reviews

Clients like working with IT Consultis because they’re good developers but also, switch hats to advise them if needed. “The team worked quickly and were strong and clear with recommendations and very prompt on communications and service,” shared the Director of Digital Development at a publishing and event company on Clutch.co.

  • GoodFirms: No published profile.

  • ItViec:4/5 

  • Clutch.co:5/5

  • The Manifest:5/5

Which is the best React.js development company?

To choose the right React.js development company, answer these questions: Do you want to be involved in the development process? Do you need advice, a roadmap, and a strategy so your developers can take it from there? Or, are you looking for a company that will take software development off your hands and comes back in a couple of months with a finished product?

  • For a development company that’s highly skilled in React.js and will work as an extension of your team (while keeping you involved), choose NaNLABS. 

  • For getting expert advice on your digital transformation strategy, try IT Consultis or NaNLABS. 

  • For outsourcing your software development needs and being completely hands-off, contact INOXOFT.

With NaNLABS, you'll partner with engineers who care about your business—and you, personally. Starting with the first introduction call, we aren't afraid to be direct, share ideas, and give away potential solutions. And, to make sure you never feel out of the loop, we will adjust to your culture and communication style. 

Ready to build your own custom software with a team that cares about you and your processes? We’re not code monkeys, we care about you.

Frequently asked questions about React.js development companies

  • Who are React.js developers?

    React.js developers are the programmers that use this JavaScript library to design and develop UI and front-end components for web applications. These kinds of developers usually get involved in all the different phases of front-end development (starting with the design).

  • How much does it cost to hire a React.js developer?

    The cost of hiring a React.js developer varies depending on the type of contract and the developer’s location. For example, hiring a React.js developer on Upwork might start at $15 per hour. But, hiring a full-time React.js developer in the US can sum up to $200k a year.

  • Which top companies use React.js?

    Many top companies use React.js on their front end. The most popular ones are Facebook, Netflix, and Spotify. In fact, React.js was built by a software engineer at Meta and first deployed on Facebook.

  • Which company is best for React.js development?

    The best company for React.js development depends on your individual needs. However, if you want to work with a software company that acts as an extension of your team and is supported by senior developers, then you need to hire NaNLABS! Get in touch.

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