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Private Blockchain Development

4.9 out of 5, based on 38 real reviews.

Rankings updated: Mar 09, 2026

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

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Hourly Rates

Undisclosed < $25 $25-$49 $50-$99 $100-$149 $150-$199 $200-$300 $300 <

Vention

4.9 (16 Reviews)

Claimed by Official Representatives

4.9 (16 Reviews)

SF Score

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

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

Expertise Distribution (%)

10% Blockchain Development
10% Ecommerce Development
10% Mobile App Development
10% Software Development
10% Web Development
10% Web Design
10% Product Engineering services
10% Cloud Computing Services
10% AI Development
10% IT Services

Engineering peace of mind

Vention is a global software development company with over 20 years of experience delivering innovative, scalable solutions for startups and large enterprises. We handle projects of any size and complexity, enabling clients to accelerate growth, launch new products, and seize emerging opportunities. With a global network of 3,000+ experienced developers, we provide top engineering talent aligned to your time zone, technology stack, and business goals. We’ve partnered with 500+ industry-leading organizations, including PayPal, IBM, Mount Sinai, PwC, and Postman, contributing to more than $15B in client acquisitions. Our engagement model helps companies reduce operational costs by up to $600K annually, while our long-term relationships—averaging over 36 months and extending up to 16 years—reflect strong client trust and satisfaction. Vention offers full-cycle software development services, from strategy and architecture to deployment and optimization. Our capabilities include custom software development, web and mobile app development, QA and testing, cloud and DevOps, eCommerce platforms, AR/VR experiences, artificial intelligence, and blockchain solutions. As a trusted technology partner, Vention empowers businesses to innovate faster, scale efficiently, and stay competitive in an evolving digital landscape.

See all 9+ Portfolios

$50-$99/hr

Hourly Rate

$25,000+

Min. Budget Size

1,000 - 3,000

Team size

New York, USA

Location

Verified Client Review

Mobile App Dev for Sports Tracking Platform

Reviewed by: Brent Varrall, Founder at AllGains View all 16 Reviews

Clustox

4.8 (8 Reviews)

Claimed by Official Representatives

4.8 (8 Reviews)

SF Score

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

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

Expertise Distribution (%)

10% Blockchain Development
20% Mobile App Development
10% Web Development
10% Software Development
10% IT Services
10% Digital Transformation
10% AI Development
10% Internet of Things
10% Product Engineering services

Award Winning Custom Software Development Company

Clustox is a leading mobile app, web, games and enterprise software development company! Clustox has a global presence with offices in the U.S, U.K, Middle East, and Australia. We're one of the best and leading app development companies that provide top-notch IT consultation, mobile app development, web and cloud solution services. We fall among the top 100 App Development Companies globally. From startups to Fortune 100 companies, our extensive platform expertise makes us the ideal candidate for multi-platform, cross-platform development, and staff augmentation services.

View Clustox Profile

$25-$49/hr

Hourly Rate

$25,000 - $100,000

Min. Budget Size

100 - 150

Team size

New York, USA

Location

Verified Client Review

Sentiment Analysis & Algorithm for Consulting Organization

Reviewed by: Usman Naeem, Director of Business Analytics at Analytics Hub View all 8 Reviews

Jafton

4.9 (2 Reviews)

Claimed by Official Representatives

4.9 (2 Reviews)

SF Score

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

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

Expertise Distribution (%)

20% Blockchain Development
20% Mobile App Development
20% Software Development
20% IT Services
10% AI Development
10% Product Engineering services

Your Partner in Digital Transformation

Jafton takes a people-centric approach to building and designing your next big idea. Whatever stage in the process you’re at we come alongside you to become your partner. We know that building an app that people love, can be a risky, creative endeavor. That’s why we don’t make assumptions, we remove them. We discover, strategize, design, develop, brand, and launch businesses into the world. Yes, our services are very good, but more than that we offer our experience from decades of guiding teams away from common pitfalls and flashy trends. We become your partner to overcome the tech obstacles, creative challenges, and potential business blunders that stand between you and your objectives. Our US-based, in-house team of creative problem-solving visionaries will help bring your ideas to life.

View Jafton Profile

$50-$99/hr

Hourly Rate

$25,000 - $30,000

Min. Budget Size

120 - 150

Team size

New York, USA

Location

Verified Client Review

Mobile & Web App Dev for Life Coaching Company

Reviewed by: Karen Brown, CEO at Life Coaching Company View all 2 Reviews

Chudovo OÜ

0.0 (0 Reviews)

Claimed by Official Representatives

0.0 (0 Reviews)

SF Score

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

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

Expertise Distribution (%)

5% Blockchain Development
25% Software Development
15% Web Development
15% IT Services
10% Ecommerce Development
10% Mobile App Development
10% AI Development
10% Cloud Computing Services

Software development company

Chudovo is a custom software development company, focused on complex systems implementation. Customers rely on our expertise, appreciate transparency in time, budget, visibility of work progress, and our assistance in achieving their business objectives with high-quality solutions. Our teams follow best development practices and methodologies and apply their experience in such industries as healthcare, finance, e-commerce, logistics, telecommunications, and others. In our portfolio, we have over 190 successfully implemented web, mobile, desktop, cloud, embedded, and AI projects. With our commitment to innovation, we bring together cutting-edge technologies, visionary strategies, and creative minds to breathe life into your visions and ideas.

View Chudovo OÜ Profile

$25-$49/hr

Hourly Rate

$5,000+

Min. Budget Size

30 - 50

Team size

New York, USA

Location

Wordsys

5.0 (5 Reviews)

SF Score

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

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

Expertise Distribution (%)

10% Blockchain Development
10% Ecommerce Development
10% Mobile App Development
10% Software Development
10% Web Development
10% Digital Marketing
10% IT Services
10% AI Development
10% CMS
10% Web Design

Innovative Web Solutions That Drive Business Growth

Wordsys is a premier web design and development agency delivering innovative, user-focused digital solutions for businesses worldwide. Specializing in custom websites, e-commerce platforms, web applications, and CMS solutions, we combine responsive design, robust functionality, and high performance to meet diverse business goals. Our expert team of developers, designers, and digital marketers also provides SEO, branding, and comprehensive digital marketing services to enhance online visibility and engagement. From startups to established enterprises, Wordsys creates secure, scalable, and results-driven digital solutions that empower brands to grow, improve user experience, and achieve measurable success in today’s competitive online marketplace.

View Wordsys Profile

< $25/hr

Hourly Rate

$1,000+

Min. Budget Size

250 - 999

Team size

New York, USA

Location

Verified Client Review

Developing and Designing Websites for Leadership Organizations

Reviewed by: Lynn D' Cruz, Founder & CEO at The Other Leader View all 5 Reviews

Computools

5.0 (5 Reviews)

SF Score

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

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

Expertise Distribution (%)

10% Blockchain Development
20% Software Development
20% Web Development
20% Mobile App Development
10% Web Design
10% IT Services
10% AI Development

Unlock Tomorrow

This IT-leader provides qualified assistance in designing smart products and adopting the latest technology innovations. In less than a decade, Computools has become a major player in global markets and currently excels at coming up with the best solutions in cross-platform mobile app development. The other sides of Computools’s business activity touch upon the IoT, VR & AR, Fintech, Consulting and Consumer services, and game software development. The company’s approach involves customized consulting during which the client has an opportunity to get a tailor-made solution that fits their high-level goals and business ambitions best. Computools’s brand has been repeatedly awarded for deep expertise and excellent digital solutions many of which were produced in association with numerous European and international enterprises.

View Computools Profile

$25-$49/hr

Hourly Rate

$50,000+

Min. Budget Size

50 - 249

Team size

New York, USA

Location

Verified Client Review

Custom Software Development for System Integrator

Reviewed by: Tokio Kuwamura, Director at Sakura-Communication View all 5 Reviews

Acropolis Infotech

4.5 (2 Reviews)

SF Score

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

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

Expertise Distribution (%)

10% Blockchain Development
10% Mobile App Development
10% Software Development
10% Web Development
10% Web Design
10% Internet of Things
10% AI Development
10% Product Engineering services
10% Cloud Computing Services
5% Digital Transformation
5% IT Services

Increasing the Potential

Acropolis Infotech is an award-winning software development company that empowers businesses to innovate and scale through cutting-edge digital solutions. With expertise in custom app development, enterprise software, web applications, mobile apps, eCommerce platforms, IoT, Blockchain, Artificial Intelligence (AI), and AR/VR technologies, we help transform ideas into powerful, results-driven products using an agile development methodology. Backed by years of experience, deep technical expertise, and a client-first approach, Acropolis delivers end-to-end web and business solutions tailored to your goals. From startups to Fortune 500 companies, our clients trust us for our commitment to quality, transparency, and innovation. Our multidisciplinary team includes UI/UX designers, full-stack developers, data engineers, and digital marketing strategists—working collaboratively to ensure your product not only performs flawlessly but also delivers measurable business impact. We take pride in solving complex challenges and delivering scalable, future-ready software solutions for diverse industries. Whether it’s digital transformation, brand growth, or process automation, Acropolis provides the strategy and technology to help you succeed. Headquartered in India and serving clients across the globe, we’re more than just a tech partner—we’re your innovation catalyst. Let’s build something extraordinary together. Visit www.acropolisinfotech.com to start your digital transformation today.

View Acropolis Infotech Profile

$25-$49/hr

Hourly Rate

$10,000+

Min. Budget Size

250 - 499

Team size

New York, USA

Location

Verified Client Review

Developing iOS and Android Apps for a Collaborative Workplace

Reviewed by: Nitin Khatri, Owner at Team CoWork View all 2 Reviews