Top Sapper.js Development Companies & Expert Sapper.js Developers in USA

Sapper.js allows for fast, scalable web applications—but you need the right expertise to unlock its full potential. SelectedFirms lists the Top Sapper.js Development Companies in USA, helping you connect with professional Sapper.js developers to build dynamic, high-performance web solutions tailored to your business needs.
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5.0 out of 5, based on 23 real reviews.
Rankings updated: Feb 11, 2026

List of Top Sapper.js Development Companies in USA | Best Sapper.js Developers

Certain agencies may be featured through sponsored placements. Rankings and SF Scores remain unbiased and are based solely on our evaluation methodology.

9 Companies

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Lounge Lizard
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Claimed by Official Representatives

60

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

60

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 25% Web Development

  • 25% Ecommerce Development

  • 25% Web Design

  • 25% Digital Marketing

Best-in-Class Websites & Results-Driven Digital Marketing

Lounge Lizard is a premier full-service digital agency with over 25 years of experience delivering award-winning web design, branding, and digital marketing solutions for startups and enterprise clients worldwide. Recognized as a top web agency on DesignRush for more than a decade, we specialize in creating websites and campaigns that increase leads, boost sales, improve SEO rankings, and enhance brand storytelling. Founded in 1998 by industry pioneers Sharon Sexton and Ken Braun, Lounge Lizard has generated over $3 billion in client sales through innovative strategies like our “7 Second Rule” and competitor-driven digital marketing tactics. Ken Braun, a Forbes contributor and Webby Awards judge, leads a team dedicated to blending creativity, UX design, and marketing expertise to deliver measurable results. Our services include: Brand Strategy, Voice, and Corporate Identity Development Custom Website Design & Development Conversion Rate Optimization (CRO) SEO (Technical, On-Page, Off-Page, Local) Digital Marketing Strategy, Social Media Management, PPC, and Email Marketing E-commerce Development, Influencer Marketing, OTT, and UX/UI Design Lounge Lizard combines creativity, strategy, and technology to help businesses dominate online, strengthen their brand presence, and drive sustainable growth. Explore our work: Colorado Rafting Website Launch https://www.coloradorafting.net/

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Inside Service Listing

N/A

Hourly Rate
Inside Service Listing

$10,000 - $100,000

Min. Budget Size
Inside Service Listing

50 - 100

Team size
Inside Service Listing

USA

Location
Verified Client Review

Verified Client Review

Professional Team with Great Results

Reviewed by: Aniket Jain, PHP Developer View all 23 ReviewsView all Reviews
CodeandDesignGroup
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agency_climbed
Claimed by Official Representatives

28

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

28

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 25% Web Development

  • 25% Digital Marketing

  • 20% Web Design

  • 15% Digital Transformation

  • 10% Ecommerce Development

  • 5% Business Services

Marketing and development Agency in USA

Code and Design Group is a digital marketing solutions provider with over 15 years of experience, specializing in services such as web development, digital marketing, social media marketing, email marketing, web design, graphic design, SEO, and PPC. Their mission is to revolutionize brands through revenue-driven digital solutions, positioning them as market leaders and enhancing their sales funnels with impactful marketing and website development. The company offers a wide range of services to help businesses of all sizes. Their award-winning and certified team is highly skilled across all domains of digital solutions and dedicated to driving business growth with expert strategies. Code and Design Group has a presence on social media platforms, including Instagram and Facebook, where they share insights and updates about their services and industry trends.

View CodeandDesignGroup Profile
Inside Service Listing

N/A

Hourly Rate
Inside Service Listing

$1,000 - $5,000

Min. Budget Size
Inside Service Listing

50 - 100

Team size
Inside Service Listing

USA

Location
NGS Solution
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agency_climbed
Claimed by Official Representatives

27

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

27

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
info
Expertise Distribution (%)
  • 16% Web Development

  • 17% Software Development

  • 15% Mobile App Development

  • 14% AI Development

  • 14% CMS

  • 13% Ecommerce Development

  • 11% IT Services

Change with Technology

NGS Solution is a cutting-edge technology company specializing in mobile app development, SharePoint, Power BI, and web design services. With a focus on delivering innovative solutions, NGS Solution partners with businesses to enhance their digital presence and streamline operations. Our expert team is dedicated to creating customized applications and visually appealing websites tailored to meet the unique needs of each client. Whether you’re looking to develop an app or a website, NGS Solution is your go-to partner for quality and excellence in technology solutions.

View NGS Solution Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$2,000 - $3,000

Min. Budget Size
Inside Service Listing

150 - 200

Team size
Inside Service Listing

USA

Location
Nextvisible Boston
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agency_climbed
Claimed by Official Representatives

27

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

27

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
info
Expertise Distribution (%)
  • 14% Web Development

  • 20% Digital Marketing

  • 14% Ecommerce Development

  • 14% Mobile App Development

  • 14% Software Development

  • 14% Web Design

  • 10% IT Services

A Full-Service Digital Agency in Boston

Nextvisible Boston is a full-service digital agency with effective digital technology development and marketing service offerings, including website design and development, digital marketing, SEO, ecommerce development, custom software and application development, and others.

View Nextvisible Boston Profile
Inside Service Listing

$100-$149/hr

Hourly Rate
Inside Service Listing

$1,000+

Min. Budget Size
Inside Service Listing

30 - 50

Team size
Inside Service Listing

USA

Location

19

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

19

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 30% Web Development

  • 20% Software Development

  • 20% Web Design

  • 15% Mobile App Development

  • 15% AI Development

Award-Winning Web & Mobile Agency

Flations is a company that specializes in creating impactful web and mobile applications for businesses of all sizes, from startups to Fortune 100 enterprises. With an average client relationship of 3 years and over 7+ patents, Flations emphasizes strong communication, attention to detail, and tight feedback loops for successful software projects.

View Flatirons Profile
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$50,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

USA

Location

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
info
Expertise Distribution (%)
  • 20% Web Development

  • 20% Mobile App Development

  • 20% Software Development

  • 20% Web Design

  • 20% AI Development

Delivering advanced digital solutions since 2005

We partner with leading brands and funded start-ups to design, build, and scale software that delivers business value and empowers people to accomplish their goals. Our work is used by millions around the world and has been recognized by trade and industry authorities such as Deloitte and Inc. Operating from the US and Europe, we’re a thriving collective of over 400 talented thinkers and doers. The products we build range from consumer-facing mobile apps, eye-catching landing pages to complex web applications and back-office systems with multiple levels of enterprise integration.

View Infinum Profile
Inside Service Listing

$100-$149/hr

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

250 - 999

Team size
Inside Service Listing

USA

Location

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
info
Expertise Distribution (%)
  • 20% Web Development

  • 20% Mobile App Development

  • 20% Software Development

  • 20% Web Design

  • 20% AI Development

We Build Great Software

Dualboot is a business and software development company with a proven track record of creating nearly a billion dollars in equity value. They have over 200 clients, including tech and non-tech founders, Fortune 500 companies, and have over 200 case studies to showcase their services.

View Dualboot Profile
Inside Service Listing

N/A

Hourly Rate
Inside Service Listing

$75,000+

Min. Budget Size
Inside Service Listing

250 - 999

Team size
Inside Service Listing

USA

Location

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 20% Web Development

  • 20% Mobile App Development

  • 20% Software Development

  • 20% Web Design

  • 20% AI Development

WOLFPACK DIGITAL SRL

The company is a 2024 Webby Award winner in the Responsible AI category and a winner of the European Technology Awards for App Development. With over 150 projects across various industries, they focus on high-quality integrated systems that deliver stunning visuals and smooth experiences. They aim to find the perfect balance between speed and quality, building products that reach business goals and can scale. They use an agile development process and the Build, Measure, Learn cycle to work with startups and brands to achieve fast go-to-market and product success. Their websites and mobile apps have over 5 million users per month.

View WOLFPACK DIGITAL SRL Profile
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

USA

Location

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

18

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

View Profile Visit Website
Services Provided
info
Expertise Distribution (%)
  • 20% Web Development

  • 20% Mobile App Development

  • 20% Software Development

  • 20% Web Design

  • 20% AI Development

Product, design and engineering for innovators

PRODUCT, DESIGN, AND ENGINEERING FOR BUISINESS INNOVATORS OAK’S LAB was founded by Jake and Theo, American-Czech brothers who recognized Prague’s potential as a hub for tech talent. We specialize in creating custom software, focusing on web and mobile applications. Since 2016, we’ve developed 48 B2B and B2C software products that have achieved successful business outcomes across various industries, including financial services, real estate, healthcare, education, and logistics. WHAT WE DO: Our cross-functional product development teams cover all the essential areas needed to build a successful product: • Product Management • UX/UI Design • Web Development • Mobile Development • AI Development • Quality Assurance OUR DIFFERENTIATORS: We are a business partner first and a technology partner second. • Definition of North Star product value proposition • Product discovery focused on innovation and ROI • Deep technical know-how • Rapid software development • Results-first company culture • American company in Prague

View OAKS LAB Profile
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

USA

Location
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