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Discover the top React.js Development Companies for Your Project
13 Companies-Rankings updated: September 03, 2026
DesignRush evaluates all React.js developers listed based on their technical expertise, past work, and client reviews. Some listings may be paid.
VerifiedVerified by the DesignRush team for authenticity and credibility.
Build Intelligent Apps for Web, Mobile, Data, AI and Cloud
Azumo is a SOC 2-certified web and software development company founded in 2016, delivering AI-augmented dedicated teams across React, Node.js, Python, and cloud stacks for clients including Meta, Twitter, Discovery Channel, and Omnicom. Well-suited for startups and enterprises needing nearshore development...
Top Services:
AI Development
Software Development
Staff Augmentation
Mobile App Development
Big Data Analytics
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Location
San Francisco, California
Number of Employees
100 - 249
Average Hourly Rate
$55/hr
Minimal Budget
$50,000 & Up
Portfolios Count
9 Projects Listed
Azumo Services
AI Development
Software Development
Staff Augmentation
Mobile App Development
Big Data Analytics
DevOps Consulting
Cloud Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Discovery Channel
Meta
Zynga
Jostens
Assembled Brands
NGL
NCSoft
Twitter
Horoscope.com
Bento
Data sourced from the agency's DesignRush profile
Azumo Reviews & Testimonials
Michael S.
Director at Software Development Company
5.0★
Software Development Review from Michael S.
We selected Azumo to develop our software. We transitioned from another development company, so Azumo was initially responsible for migrating our existing code and environments. We are currently still working with Azumo as our nearshore software development team on adding new items to our software.
Anonymous
CTO at Healthcare Company
5.0★
UI/UX Design Review from Anonymous
Azumo helped us migrate our existing UIs into a new framework, creating reusable components and the infrastructure needed for future development. The developer they assigned became a seamless part of our team, always punctual, responsive, and a great fit overall.
Anonymous
VP Product & Engineering at Sales & Mktg Software Company
5.0★
Software Development Review from Anonymous
Thanks to Azumo’s work, our product is now more scalable, optimized, and ready for a growing user base. Their team has managed the engagement effectively, keeping us updated and addressing any challenges along the way. We’ve appreciated their constant availability and proactive communication.
Reviews verified by DesignRush and sourced from the agency's profile
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Transformative Branding & Web Design for Visionary Nonprofits
Specialists in strategic brand building and web design for nonprofits who change systems that help create a more just, equitable, and sustainable world...
Top Services:
Branding
Web Design
UI/UX Design
Logo Design
WordPress Website Design
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Location
New York City, New York
Number of Employees
Under 49
Average Hourly Rate
$185/hr
Minimal Budget
$50,000 & Up
Portfolios Count
8 Projects Listed
Constructive Services
Branding
Web Design
UI/UX Design
Logo Design
WordPress Website Design
Web Development
Digital Strategy
Design Services
Graphic Design
Creative Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Acumen
American Forests
The Aspen Institute
Blue Meridian Partners
Cardiovascular Research Foundation
Cardozo School of Law
Catalyst
The Chronicle of Philanthropy
The Climate Trust
ClimateWorks Foundation
Data sourced from the agency's DesignRush profile
Constructive Reviews & Testimonials
Clea Bierman
Director of Digital Marketing at Blue Meridan Partners
5.0★
WordPress Website Design Review from Clea Bierman
Blue Meridian Partners has worked with Constructive as our website design and development partner for more than eight years. During that time, they have played a significant role in shaping our digital presence and helping bring our brand to life online. What I've appreciated most is Constructive's ability to balance creativity with stewardship. They have consistently found thoughtful ways to push our brand forward when innovation was needed, while also respecting and working intelligently within established brand guidelines. Their team understands how to translate complex ideas into engaging digital experiences. Across dozens of projects, I've worked with three different project managers, and each has been highly accountable and genuinely enjoyable to partner with. The relationships have been professional, collaborative, and built on trust. We've also had several occasions where creative projects required significant work on very tight timelines with little notice, and Constructive consistently found a way to deliver. Like any long-term partnership, navigating complex websites and evolving organizational needs requires ongoing communication and attention. What has kept us coming back year after year is Constructive's commitment to partnership, their willingness to solve problems alongside us, and the care they bring to our mission. I am grateful for their contributions to Blue Meridian's growth and would confidently recommend Constructive to organizations looking for a thoughtful, mission-driven digital agency.
Robert Espinoza
Former EVP of Policy at PHI
5.0★
Nonprofits Review from Robert Espinoza
Constructive built PHIs website back in 2017-2018 and, in many ways, they have been with the organization ever since. Over almost eight years, they've grown alongside PHI rather than simply maintaining a site. PHI is a national nonprofit working at the intersection of research, policy, and workforce interventions on the direct care workforce, and a lot of what we do is complicated. Constructive's remarkable team has had a real knack for turning that complexity into something clear, usable, and genuinely engaging online.
Some of the things I'm most proud of from our partnership like our worker story gallery, our national resource center on direct care workers, and our online index came out of that collaboration. These weren't just features; they became core parts of how we tell our story and share our work with advocates, policymakers, and practitioners.
What made Constructive stand out was how invested they were in our mission. They were creative and technically excellent, yes but more than that, they showed up as a true partner. We didn't experience them as a vendor so much as an extension of our team. I would absolutely recommend them to any nonprofit or social impact organization looking for a thoughtful, dependable digital partner.
Diana Denza, MPA
Communications Director at Center for Family Representation
5.0★
Nonprofits Review from Diana Denza, MPA
The Center for Family Representation worked with Constructive on a year-long rebranding process that overhauled our logo, colors, website, and all of our marketing collateral. As a result of this process, we now have a brand that truly represents our organization and the work we do for low-income NYC families. Constructive was highly responsive and professional throughout the process, working with us to ensure that every element of the rebranding felt just right.
Reviews verified by DesignRush and sourced from the agency's profile
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Matellio is a leading software engineering studio, recognized globally for delivering intelligent solutions powered by Artificial Intelligence and Machine Learning. We specialize in developing customized AI solutions tailored to various needs of businesses under different industry verticals...
Top Services:
AI Development
IoT
DevOps Consulting
Cloud Consulting
Mobile App Development
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Location
Denver, Colorado
Number of Employees
250 - 499
Average Hourly Rate
$50/hr
Minimal Budget
$50,000 & Up
Portfolios Count
26 Projects Listed
Matellio Inc. Services
AI Development
IoT
DevOps Consulting
Cloud Consulting
Mobile App Development
Software Development
Web Design
Web Development
Big Data Analytics
Staff Augmentation
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Hewlett Packard Enterprise
Tracking Genie
Brideside
Air Fusion
vCard Global
Codexa
PTGI
INSPRO
NERVVE
GoShow
Data sourced from the agency's DesignRush profile
Matellio Inc. Reviews & Testimonials
Undisclosed
CTO at V Card Global
4.7★
Web Development Review from Undisclosed
Matellio is one of the best organizations I have had a chance to work with. Their unique approach to becoming an integrated extension of our corporate programming staff provides us with the ability to design and implement solutions in an ever changing environment.
Reviews verified by DesignRush and sourced from the agency's profile
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Product, engineering, and AI partner for high-growth companies.
OAK'S LAB is a product, engineering, and AI partner for high-growth companies, not a generic dev shop. We embed alongside product teams to design, build, and scale production software, with deep experience in regulated industries: finance, healthcare, cybersecurity, and education...
Top Services:
Software Development
Mobile App Development
Web Development
UI/UX Design
AI Development
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Location
Prague, Czech Republic
Number of Employees
50 - 99
Average Hourly Rate
$99/hr
Minimal Budget
$50,000 & Up
Portfolios Count
7 Projects Listed
OAK'S LAB Services
Software Development
Mobile App Development
Web Development
UI/UX Design
AI Development
Web Design
Software Testing
Digital Services
Branding
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
NASDAQ Private Market
PlexTrac
Vette
Crave
Capital Markets Gateway
Karus
Plotify
Storyvine
West Tenth
Dot Residential
Data sourced from the agency's DesignRush profile
OAK'S LAB Reviews & Testimonials
Aydar Ageev
Review from Google
5.0★
Aydar Ageev's Review Sourced from Google
It's probably a wonderful feeling to go to work, being able to feel the tourist hustle and hear the sound of the clock from the Old Town Square.
Aleksandar Chernev
Review from Google
5.0★
Aleksandar Chernev's Review Sourced from Google
Such an awesome event. It was so well organized and I was so pleased to meet Oak’s Lab awesome team.
Adam Mazouz
Review from Google
5.0★
Adam Mazouz's Review Sourced from Google
This was one of the best meetups of the year for me. The ambiance, the vitality, and the community they brought together. P.S: The office location is winning big times.
Reviews verified by DesignRush and sourced from the agency's profile
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We deploy secure AI solutions that deliver positive ROI within weeks.
NineTwoThree AI Studio is a Boston-based AI agency that builds secure, production-grade AI and ML solutions with measurable ROI. Founded in 2012, our Ph.D.-level engineers and certified product managers have delivered 150+ projects for enterprise brands and startups alike...
Top Services:
AI Development
Mobile App Development
IoT
Software Development
DevOps Consulting
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Location
Danvers, Massachusetts
Number of Employees
100 - 249
Average Hourly Rate
$99/hr
Minimal Budget
$50,000 & Up
Portfolios Count
5 Projects Listed
NineTwoThree Services
AI Development
Mobile App Development
IoT
Software Development
DevOps Consulting
Wearables
Software Testing
Digital Strategy
Product Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Dont settle for off-the-shelf. Expertly crafted & custom-tailored software from the USA.
K-Optional Software: where your success is our success. From secure solutions that scale to an uncompromising focus on return on investment, we're the company that delivers. Dont settle for off-the-shelf. Expertly crafted & custom-tailored software from the USA...
Top Services:
Mobile App Development
Software Development
AI Development
Location
New York City, New York
Number of Employees
Under 49
Average Hourly Rate
$200/hr
Minimal Budget
$50,000 & Up
K-Optional Software, LLC Services
Mobile App Development
Software Development
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Viapath Technologies
AllModular Systems
Assemplify
University of Arkansas
University of Texas Austin
Flowty
RepairDispatch
Data sourced from the agency's DesignRush profile
K-Optional Software, LLC Reviews & Testimonials
Michael Levy
President at Flowty
5.0★
Software Development Review from Michael Levy
Flowty is a blockchain-based platform providing various transaction services around NFTs. K-Optional wears many hats in support of Flowty including Front End, Back End, business strategy, SEO and more.
The K-Optional team has been incredible to work with. They are proactive, supportive, smart, thoughtful and, most importantly, fit seamlessly into our team and company culture. To put it succinctly, we tried to hire them full-time...and then tried to buy their company to acqui-hire them.
Some of their strengths include: reliability, responsiveness and creativity. There are many groups out there that can perform some version of the work we are looking for. There are not many groups that are responsive at all hours of the day, deliver consistently and able to present data-backed business strategies.
Jane Smarovozova
Creative Director at McSwain
5.0★
Software Development Review from Jane Smarovozova
We collaborated with K-Optional to develop a custom inventory management dashboard tailored for real estate clients. We provided the creative vision and detailed designs, while their team focused on the software development, ensuring that every element was implemented perfectly. We worked hand-in-hand flawlessly, resulting in a sleek, user-friendly interface that not only looks great but functions seamlessly. The synergy between design and development allowed us to deliver a product that exceeded client expectations, combining aesthetics with powerful functionality.
Reviews verified by DesignRush and sourced from the agency's profile
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Global boutique consultancy in Digital Strategy and AI
Kocoro is a boutique AI consultancy and digital growth studio. We integrate AI into real business processes — governed and measured — and build B2B growth systems that compound: SEO, GEO, web and thought leadership. Special focus on financial services and M&A firms...
Top Services:
Web Development
Digital Strategy
Public Relations
Web Design
SEO
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Location
San Cristóbal de La Laguna, Spain
Number of Employees
Under 49
Minimal Budget
$50,000 & Up
Portfolios Count
2 Projects Listed
Kocoro Services
Web Development
Digital Strategy
Public Relations
Web Design
SEO
AEO
Digital Marketing
Content Marketing
AI Development
Business Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Digital Strategy, Branding, Web Design & Development.
Blacksmith Agency stands as a leading force in the realm of digital product development and online experiences. Founded on the principles of aligning with user expectations and leveraging data-driven insights, our agency is dedicated to empowering our partners in their pursuit of growth, innovation, and the...
Top Services:
Digital Services
Web Design
Web Development
Branding
eCommerce Development
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Location
Phoenix, Arizona
Number of Employees
50 - 99
Average Hourly Rate
$200/hr
Minimal Budget
$50,000 & Up
Portfolios Count
4 Projects Listed
Blacksmith Agency Services
Digital Services
Web Design
Web Development
Branding
eCommerce Development
Product Design
Design Services
Digital Strategy
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
We build great software that builds your bottom line
Dualboot is a business and software development company. We build great software, but we base our success on whether it helps your business grow...
Top Services:
Software Development
Mobile App Development
Web Development
AI Development
Staff Augmentation
Show more
Location
Raleigh , North Carolina
Number of Employees
250 - 499
Minimal Budget
$50,000 & Up
Portfolios Count
3 Projects Listed
Dualboot Partners Services
Software Development
Mobile App Development
Web Development
AI Development
Staff Augmentation
UI/UX Design
IT Services
Cloud Consulting
DevOps Consulting
Blockchain
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Elevation Church
Lexipol
DebtBook
Boardroom Insiders
PrizePicks
PetScreening
Continental
flyExclusive
Jib Jab
CRDN
Data sourced from the agency's DesignRush profile
Dualboot Partners Reviews & Testimonials
Nelson Santini
Review from Google
5.0★
Nelson Santini's Review Sourced from Google
Phenomenal team to work with. From Sales to Engineering, Customer Service and at the highest level of leadership, the DualBoot partner team is simply great.
They are consistent and interested in your success. Once their engineering team has learned your stack, you can't tell from inside to external resources. Work just gets done. I recommend them w/o reservations; start-up or well established firm, you are in great hands with the DualBoot team!
Geoff Eloge
Review from Google
5.0★
Geoff Eloge's Review Sourced from Google
Dualboot has been a great partner for our fintech startup. Their knowledge and expertise have been critical in guiding us towards launch. We'd highly recommend them for anyone who needs a trusted technology partner.
Dan Sperau
Review from Google
5.0★
Dan Sperau's Review Sourced from Google
We have been working with Dualboot for close to a year and the process is perfect. The team is responsive, knowledgeable and talented. The Dualboot team has taken the idea of software and allowed it to be simplified for non-tech minded people. I would recommend them to anyone.
Reviews verified by DesignRush and sourced from the agency's profile
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iSimplifyMe is an AI Infrastructure & Orchestration firm. We architect and operate production AI on private AWS...
Top Services:
AI Development
Software Development
Cloud Consulting
CRM Consulting
IT Services
Show more
Location
Chicago, Illinois
Number of Employees
Under 49
Average Hourly Rate
$299/hr
Minimal Budget
$50,000 & Up
Portfolios Count
3 Projects Listed
iSimplifyMe Services
AI Development
Software Development
Cloud Consulting
CRM Consulting
IT Services
DevOps Consulting
Web Development
IT Compliance Solution
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Bartco Lighting
Dr Jay Calvert
Signature Dentistry
Data sourced from the agency's DesignRush profile
iSimplifyMe Reviews & Testimonials
Dr. Millicent Rovelo
Review from Google
5.0★
Dr. Millicent Rovelo's Review Sourced from Google
I could not be happier with this company! I have had two websites designed by them and the whole experience was amazing. Their technology and skills are top of the line and their customer service is excellent. Not to mention a good eye for aesthetics and skilled at SEO building. Highly recommend!!
Nikki Lazzara
Review from Google
5.0★
Nikki Lazzara's Review Sourced from Google
Joe and James and AJ have done wonders for our business. Excellent design as well as support while we navigate our new website. Professional. I highly recommend them if you are looking to improve your digital marketing.
Anita Patel
Review from Google
5.0★
Anita Patel's Review Sourced from Google
I’ve worked with ISimplifyMe on a number of different projects over the years, and I think they are second to none. I am very particular about whom I choose to work with, and had interviewed a lot of companies before deciding to go with ISimplifyMe. I had contemplated going with a local company (Los Angeles), thinking it may be easier to communicate, but with ISimplifyMe the time difference was a nonissue. They replied faster and more thoroughly than local companies, and have been able to deliver time and time again. They have consistently produced high quality work, while being honest, reliable, and trustworthy.
Reviews verified by DesignRush and sourced from the agency's profile
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A top custom software development firm dedicated to delivering bespoke digital products that drive innovation and help you achieve your brand goals. A full-stack developer with expertise in every major platform and language, we design and deliver custom applications and host and maintain the solutions we...
Top Services:
Software Development
Mobile App Development
UI/UX Design
Software Testing
WordPress Website Design
Show more
Location
Spring, Texas
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$50,000 & Up
Espresso Moon Services
Software Development
Mobile App Development
UI/UX Design
Software Testing
WordPress Website Design
eCommerce Development
Web Development
AI Development
VR/AR
Cloud Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
DistributionNOW
Tesla
Nucor Steel
Everest Funeral Concierge
Flexitallic
Solvay Dental
Stream Realty
Wilson Perumal
Neuhaus Academy
SafeFleet
Data sourced from the agency's DesignRush profile
Espresso Moon Reviews & Testimonials
Bradley Collins
Review from Google
5.0★
Bradley Collins's Review Sourced from Google
Working with the guys at Espresso Moon (Scott, Doug, Tim and Dwayne) was truly a great collaboration and experience. They didn't just throw a website together for us, they helped us to reinvent ourselves. They go out of their way to get to know you and your business to the fullest extent, and that is a quality that is not often seen. If I were to recommend a web design/hosting company to anyone, Espresso Moon would be the one and only name I give. Thank you for your service and support!
Meredyth Jones
Review from Google
5.0★
Meredyth Jones's Review Sourced from Google
I worked primarily with Scott, Tim and Doug to build a fairly complicated site: Paypal/credit card payments, video training modules, a graded quiz, and issuance of a completion certificate. They were the only website company that invited me to an in-person meeting and that was tremendously helpful in me understanding how they work and them understanding my goals. Large Animal Consulting & Education launched 2 days ago and the site is running smoothly. I'm very happy with the site they designed (they also designed my logos) and am looking forward to using them to support and add to the site down the road.
Caleb Schallert
Review from Google
5.0★
Caleb Schallert's Review Sourced from Google
Doug Wheeler is the owner of Espresso Moon and he has provided my small business excellent IT technical support for our website. His team helped me out by removing malicious code that was affecting my site right after the Heart Bleed epidemic last year. He got my site back up and running so i could continue business and save my online reputation. I would recommend Espresso Moon LLC to anyone in need of a new website or mobile application because they follow through with what they promise to do, on time and on budget. They are truly a pleasure to work with!
Reviews verified by DesignRush and sourced from the agency's profile
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Frequently Asked Questions About React.js Developers
What are the typical React.js development services?
React.js development companies provide end-to-end services that span the entire software development lifecycle, from strategy and design to development and launch. Core services include:
React.js consulting: Guiding businesses on building and optimizing their React applications through component selection, architecture design, and roadmap development.
Custom React.js development: Engineering applications tailored to a business's specific needs, goals, and existing IT infrastructure, and typically include web design and web development.
UI/UX design: Delivering intuitive interfaces, clear user flows, and standardized design systems that align with a brand and its target users.
API integration: Connecting the React frontend to back-end systems, third-party tools, and external data sources to support seamless functionality and user experiences.
Platform migration: Rebuilding or migrating legacy frontends to React to improve maintainability, usability, and performance, often with minimal disruption.
Maintenance and support: Providing post-launch monitoring, debugging, performance optimization, and technical support.
Many React.js developers also offer specialized expertise, including SaaS products, web application development, customer portals, eCommerce solutions, and minimum viable products (MVPs).
Some React.js development companies may also offer digital marketing services, such as content marketing, search engine optimization (SEO), and branding.
What is the difference between React and React Native?
The main difference is that React is used to build web user interfaces, while React Native is for developing mobile applications. Here are more details on their differences:
React
React Native
Primary platforms
Websites, web applications, and single-page applications
iOS and Android mobile apps
Tech base
JavaScript/TypeScript with React for web UI
JavaScript/TypeScript with React, rendered through native UI components
Best for
Businesses building browser-based products, customer portals, dashboards, eCommerce sites, and SEO-focused web experiences
Businesses building cross-platform mobile apps for both iOS and Android with shared logic and accelerated development time
Examples
Facebook, Instagram, Netflix web
Microsoft Teams and Shopify
What are the typical React developer tools?
React.js developers typically choose their stack based on a client's product goals, technical requirements, and existing systems. For example, they may use Formik for complex forms and validation, Storybook for developing and testing components in isolation, and MUI for production-ready UI components and design systems.
Back-end options: Express, Laravel, Rails, ASP.NET
Databases and infrastructure: PostgreSQL, SQL Server, Redis
Can React.js developers build AI-powered features into web applications?
Yes. A React.js developer can build AI-powered features into a web application by integrating model APIs, SDKs, and AI workflows into the product experience.
Depending on your goals, this may include providers such as Google Gemini or Anthropic Claude, along with React developer tools, like Vercel's AI SDK for building chat, search, recommendation, and automation experiences in React-based apps.
These companies can help you build features such as:
Personalized content and recommendations based on user behavior
Chatbots and virtual assistants for real-time customer support
Smart search with autocomplete, semantic search, and related-result suggestions
AI-assisted dashboards that generate summaries, reports, forecasts, and insights from business data
When should you hire a React.js development company instead of using an in-house team?
The right choice depends on your project goals, internal capacity, timeline, and need for control. You may want to hire a React.js development company if:
You have a short-term or time-sensitive project, but your internal team is already at capacity.
You do not have the specialized expertise required for the project, such as React architecture, performance optimization, migration, or AI feature integration.
You need to accelerate delivery without hiring and onboarding a full internal team.
You want access to a broader range of skills, such as design, front-end engineering, QA, and post-launch support, through a single external partner.
You need temporary support to fill skill gaps or expand delivery capacity.
Use an in-house team when:
The application is a core business product that requires long-term ownership and deep institutional knowledge.
The project involves highly sensitive systems, proprietary logic, or strict security and compliance requirements.
You need close day-to-day collaboration, faster internal feedback loops, and direct control over priorities.
The product requires continuous iteration and alignment with multiple internal teams over time.
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Proposals