Top ReactJS Development Companies in Montreal
Goodfirms has reviewed 16 ReactJS Development Companies in Montreal as of September 2026. The top-ranked firm is Probey Services (5.0 stars, 122 verified reviews, < $25/hr, founded 2016, Montreal). Across the category, the median hourly rate is $25, median client rating is 4.9, and 19% of firms employ 50+ members. Explore the vetted ReactJS Development Companies in Montreal below, compare their strengths, and connect with the provider best suited to your requirements.
Goodfirms has verified 16 ReactJS Development Companies in Montreal - part of 9,007+ React.js Development Companies, each passing Goodfirms' 4-step verification process (background check, client interviews, portfolio audit, ongoing quality review). Listings marked "Sponsored" are agencies that pay for premium placement - sponsorship does not affect star ratings or review content.
Top 10 at Glance
Compare the highest-ranked firms first side by side.
List of Best ReactJS Development Companies in Montreal
Sponsored
Using AI Tools
ChatGPT
Claude
Gemini
Perplexity
GitHub Copilot
- + 4 More
Probey Services is a renowned IT and digital solutions provider, powering innovation for startups, SMEs, and growing organizations worldwide. With a strong presence in India and 11 global branches, we combine global reach with deep technical expertise.Our 320+ specialists have successfully delivered 1900+projects over the ... read Probey Services reviews & insights
Probey Services is a renowned IT and digital solutions provider, powering innovation for startups, SMEs, ... read Probey Services reviews & insights
< $25/hr250 - 9992016Montreal, CanadaA well-executed website project that gave us a stronger foundation for future growth.
- Product ManagerWhy Probey Services?
- Delivered 1,800 projects in the last decade
- Awarded, Most-reviewed, most-rated (122 reviews)
- Reliable & scalable solution with 320 experts
Using AI Tools
Claude
Internal AI harness tool
ChatGPT
Gemini
Perplexity
Diffco is a San Francisco-based AI-first software engineering partner for growth-oriented teams. We embed senior engineers and product strategists who turn AI vision into shipped, revenue-driving products. Our team has spent the last 18 years building: SaaS platforms, web&mobile apps, and now AI-native systems for ... read Diffco reviews & insights
Diffco is a San Francisco-based AI-first software engineering partner for growth-oriented teams. We embed senior ... read Diffco reviews & insights
$100 - $149/hr50 - 2492008Montreal, CanadaDiffco delivered excellent development support, improving our platform's performance and reliability while completing the project on time and within budget.
- CPOWhy Diffco?
- AI engineering as a core AI-First by Default
- Senior Silicon Valley team, 18 years of delivery
- Product-Oriented Approach
Canada based team with specialization in React.js and Node.js development. Our service include Custom Web Development, Ecommerce, Mobile Apps Development and Saas. From startups to enterprise organizations, we provide a fast and considerate software solutions that meet the needs of the clients.
Canada based team with specialization in React.js and Node.js development. Our service include Custom Web ... read Devfortress reviews & insights
$50 - $99/hr10 - 492017Montreal, CanadaVery satisfied. They delivered within the agreed timeline and budget.
- LawyerUsing AI Tools
GitHub Copilot
Claude
Servicing clients in the USA and Canada. Why Sidekick Interactive?We Build With You, Not Just For You.15+ years of mobile app expertise50,000+ hours of mobile and web application development deliveredMontreal-based and led team.We have 75%+ senior developers.Long-term collaborations across our client base, not one-off builds.Agile ... read Sidekick Interactive reviews & insights
Servicing clients in the USA and Canada. Why Sidekick Interactive?We Build With You, Not Just ... read Sidekick Interactive reviews & insights
$100 - $149/hr10 - 492011Montreal, CanadaThey delivered quality native mobile app on time, with strong product focus, and clear communication
- OwnerWhy Sidekick Interactive?
- We can execute on your vision independently
- We use AI and real senior experts to be efficient
- We have built apps for 15 years, we will deliver
We build software that outlasts us. We're a full-stack software consultancy operating out of Montreal, NYC and Medellin. We've grown from 2 original founders in 2016 to a full team today, with a wide range of projects launched over the past 4 years. We work with a wide variety of clients and projects and ♥️ ... read Monadical reviews & insights
We build software that outlasts us. We're a full-stack software consultancy operating out of Montreal, ... read Monadical reviews & insights
$100 - $149/hr10 - 492016Montreal, CanadaDevCyclop is a Montreal‑based firm specializing in custom full‑stack web development, business intelligence, predictive analytics, workforce management, and AI solutions . Their offerings include: Web Applications: Fully integrated, responsive, and tailored to clients’ needs. Business Intelligence: Dynamic dashboards and live data feeds for timely insights. Predictive Analytics: State‑of‑the‑art modeling, A/B testing, and SEO strategies. Workforce ... read DevCyclop reviews & insights
DevCyclop is a Montreal‑based firm specializing in custom full‑stack web development, business intelligence, predictive analytics, ... read DevCyclop reviews & insights
< $25/hr10 - 492016Montreal, CanadaAs a leading white label development agency, our partnership with digital agencies, graphic design studios and marketing consultants translates into strategic value for them. We enable them to expand their operations, increase their profits, and ensure consistent delivery of top-notch websites.At the same time, forget about the hassle and cost of hiring an in-house developer. ... read Atlas Code reviews & insights
As a leading white label development agency, our partnership with digital agencies, graphic design studios ... read Atlas Code reviews & insights
$50 - $99/hr10 - 492022Montreal, CanadaUsing AI Tools
Claude
ChatGPT
Zylx AI
StillAwake Media is a Montréal-based digital agency helping businesses build stronger brands, better websites, and sustainable online growth. We combine web development, SEO, digital strategy, eCommerce, automation, and AI-powered systems to create digital infrastructure designed to perform—not simply look good.Our approach brings strategy and execution together. Instead of coordinating separate developers, designers, SEO consultants, and ... read StillAwake Media reviews & insights
StillAwake Media is a Montréal-based digital agency helping businesses build stronger brands, better websites, and ... read StillAwake Media reviews & insights
NAFreelancer2025Montreal, CanadaWhy StillAwake Media?
- Strategy, Design, Development & Growth
- AI-Powered Automation Solutions
- One Partner, From Start to Scale
Netcoden is a mainstream Software Development Company focuses in the arena of CRM, Mobile & Web App Development. We also offer solutions in diverse areas like Banking, Insurance , Trading system tools & plugins, Software & Financial applications, Internet/Intranet applications and e-Commerce & Integrated Business solutions. We are committed to delivering services within the time ... read Netcoden Inc reviews & insights
Netcoden is a mainstream Software Development Company focuses in the arena of CRM, Mobile & ... read Netcoden Inc reviews & insights
$100 - $149/hr10 - 492015Montreal, CanadaKanguru Digital Marketing Agency specializes in helping businesses navigate, adapt and grow through proven online marketing strategies. We truly believe that growth, on all levels, means constant evolution. Throughout our 20+ years we have published hundreds of custom designed websites, developed multi-functional ERP’s and web applications, and deployed thousands of successful digital marketing campaigns. Our ... read Kanguru Digital Agency reviews & insights
Kanguru Digital Marketing Agency specializes in helping businesses navigate, adapt and grow through proven online ... read Kanguru Digital Agency reviews & insights
$150 - $199/hr10 - 492005Montreal, CanadaWe are fluent in AI and software solution engineering. We leverage our expertise to build innovative solutions that boost productivity, increase efficiency, enhance experience.
We are fluent in AI and software solution engineering. We leverage our expertise to build ... read Brainstron AI reviews & insights
NA2 - 92023Montreal, CanadaSimplyPHP is a Canadian remote-first development company specializing in PHP and full-stack web development. The Company provides staff augmentation, project rescue, DevOps, and consulting services to clients across North America and Europe. With a team of full-time, senior-level developers, SimplyPHP is known for reliability, clear communication, and flexible, scalable support, offering a personalized alternative to ... read SimplyPHP reviews & insights
SimplyPHP is a Canadian remote-first development company specializing in PHP and full-stack web development. The ... read SimplyPHP reviews & insights
$25 - $49/hr10 - 492010Montreal, CanadaEngiNerds Digital Agency is a Montréal-based team of website design, website development, mobile app development and digital marketing specialists. We build lightning-fast WordPress and custom web solutions, conversion-ready online stores and user-centric iOS/Android apps, then fuel growth with SEO, paid ads and data-driven campaigns. Whether you’re a start-up or enterprise in Montréal, Toronto, Vancouver, Saskatchewan, ... read EngiNerds Digital Agency reviews & insights
EngiNerds Digital Agency is a Montréal-based team of website design, website development, mobile app development ... read EngiNerds Digital Agency reviews & insights
< $25/hr2 - 92016Montreal, CanadaWe are a team of developers with more than 5 years of experience in software development. We focus on listening and understanding our client needs, requirements and developing reliable and outstanding solutions. We believe the quality of your website/app should match the quality of your business so our goal is to ensure you put your ... read Appanoo Labs reviews & insights
We are a team of developers with more than 5 years of experience in software ... read Appanoo Labs reviews & insights
$50 - $99/hr2 - 92018Montreal, CanadaTST.NET is an ocean of various creative services. Get in touch to know more information about our products and services. We are happy to host you. We are a team of top 1% marketing experts. Let us help you take your business to the next level with our proven track record of success. Our team ... read TST Search Engine Marketing reviews & insights
TST.NET is an ocean of various creative services. Get in touch to know more information ... read TST Search Engine Marketing reviews & insights
$50 - $99/hr10 - 492011Montreal, CanadaGenZ Media is your trusted partner in Website Development and Digital Marketing. With a passion for innovation, we specialize in creating dynamic and responsive websites that leave a lasting impression. Our team of experts combines creativity and technical expertise to bring your digital vision to life. In the realm of Digital Marketing, we excel in ... read Genz Media Agency reviews & insights
GenZ Media is your trusted partner in Website Development and Digital Marketing. With a passion ... read Genz Media Agency reviews & insights
NA2 - 92023Montreal, Canada
Post your project. Get proposals from PRO-verified firms.
Goodfirms recommends the top 3. You pick the winner.
Why Trust Goodfirms
Goodfirms is the world’s leading reviews and ratings company featuring 100,000+ tech companies from across the globe, complete with 80,000+ humanly vetted client reviews, detailed portfolios, hourly rates, employee strength, and more to help you choose your perfect tech partner.
Humanly-Vetted Client Reviews
Our researchers have personally vouched for the authenticity of 80,000+ client reviews by speaking directly with clients, cross-checking project details, timelines, and results to ensure 100% credibility.
Data-Driven Rankings
Data powers our company listings. Every company listed is evaluated based on its expertise, experience, market presence, reviews, and client satisfaction rate, which helps buyers confidently choose the right tech partner.
Global Trust & Recognition
Goodfirms is trusted by 100,000+ businesses in 160+ countries to connect with reliable tech partners. Our reputation is built on 80,000+ verified reviews and rankings you can trust.
Transparency In Detail
From verified client reviews and portfolio highlights to service focus and pricing, Goodfirms provides a 360-degree view of every company, helping 2+ million monthly users find the perfect tech partner.
Trending insights from Goodfirms
Valuable insights from top experts accelerate decision-making.

API Integration Security Best Practices for 2026: A Checklist Before You Ship
Learn API security best practices for 2026, from authentication and secrets management to third-party risks and a pre-launch security checklist.

White Label Software Development: How It Works & Benefits
White label software development lets you launch branded products without building from scratch. See how it works, its benefits, and when it makes sense

Express.js Backend Development in 2026: Costs, Benefits, Scalability & Best Use Cases
A complete guide to Express.js Backend Development costs, scalability, and use cases in 2026 — everything you need before choosing a partner.














