# Top Software Testing Companies in Japan Recommended Software Testing companies in Japan include VNEXT HOLDINGS, Artifact Consultancy (ARTICON), Indo-Sakura Software Pvt Ltd, G K Intelligent Techsol (Pvt) Ltd, Launch Lab, Company Removed, Room 8 Group, IB-Staff, SORAMITSU | 2016-2025, Tinhvan Outsourcing JSC. We verify reviews and evaluate companies so you can choose with confidence. We may earn a fee for some placements. [Learn how Clutch ensures trust](#why-trust-clutch) ## List of the Best Top Software Testing Companies in Japan Ratings Updated: Jul 16, 2026 ### [VNEXT HOLDINGS](https://clutch.co/profile/vnext-holdings) #### 5 out of 5 star rating (3 reviews) - $1,000+ minimum project size - $25 - $49 average hourly rate - 250 - 999 employees - Chiyoda City, Japan #### Services Provided - Allocation of Expertise by Percentage - 20% Custom Software Development - 15% Blockchain - 10% Application Management & Support - 5% Cybersecurity - 10% IT Strategy Consulting - 15% Mobile App Development - 10% Application Testing - 15% Web Development #### Company description Struggling with rising development costs and slow delivery? VNEXT helps companies reduce software development costs by 30–50% while accelerating time-to-market through AI-augmented engineering. We combine experienced engineers with AI-powered tools across the entire development lifecycle—from coding and testing to QA and maintenance—allowing our clients to deliver more with smaller, highly efficient teams. Unlike traditional outsourcing models that focus on engineer-hours, VNEXT focuses on measurable business outcomes. Our approach is designed to optimize not only how software is built, but also how resources are used. By integrating AI into daily workflows, we improve productivity, reduce manual effort, and enhance overall software quality. Our clients typically achieve: 30–50% reduction in development costs 2x faster delivery speed Up to 60% reduction in QA and testing effort We specialize in: AI-augmented software development MVP and rapid product delivery Legacy system modernization Development cost optimization VNEXT works closely with clients in Japan and global markets, with a strong emphasis on communication, reliability, and long-term partnership. Our teams are experienced in cross-cultural collaboration and understand the importance of consistency, transparency, and responsiveness in every project. What makes VNEXT different is our commitment to delivering clear, measurable impact. We align closely with client goals, continuously optimize our development processes, and ensure that every engagement creates tangible value. [Visit Website](https://vnext.co.jp?utm_source=clutch.co&utm_medium=referral&utm_campaign=directory) --- ### [Artifact Consultancy (ARTICON)](https://clutch.co/profile/artifact-consultancy-articon) #### 5 out of 5 star rating (1 reviews) - $10,000+ minimum project size - $150 - $199 average hourly rate - 2 - 9 employees - Kobe, Japan #### Services Provided - Allocation of Expertise by Percentage - 50% Conversion Optimization - 50% Application Testing #### Company description Artifact Consultancy (ARTICON) is a specialized conversion rate optimization (CRO) agency. Their reviews highlight a successful track record, with positive outcomes and statistically significant increases in conversion rates. Approximately 90% of clients praise their thorough CRO audits and effective A/B testing, noting smooth workflows and timely delivery. A minor suggestion for improvement involved condensing audit reports for quicker review. [Visit Website](http://articon.agency/) --- ### [Indo-Sakura Software Pvt Ltd](https://clutch.co/profile/indo-sakura-software) - $50,000+ minimum project size - $200 - $300 average hourly rate - 50 - 249 employees - Koto City, Japan #### Services Provided - Allocation of Expertise by Percentage - 20% AI Consulting - 20% Blockchain - 20% Call Center Services - 20% Cybersecurity - 20% Application Testing #### Company description Cybersecurity company Indo-Sakura Software Pvt Ltd was established in 2006. The agency focuses on Cybersecurity and Blockchain. [Visit Website](https://www.indosakura.com/) --- ### [G K Intelligent Techsol (Pvt) Ltd](https://clutch.co/profile/g-k-intelligent-techsol) - $5,000+ minimum project size - $25 - $49 average hourly rate - 10 - 49 employees - Osaka, Japan #### Services Provided - Allocation of Expertise by Percentage - 20% Custom Software Development - 20% ERP Consulting and SI - 20% Mobile App Development - 20% Application Testing - 20% IT Staff Augmentation #### Company description Established in 2022, G K Intelligent Techsol (Pvt) Ltd is a small ERP consulting and SI company. Their team specializes in ERP consulting and SI and IT staff augmentation. [Visit Website](https://gkitechsol.com/) --- ### [Launch Lab](https://clutch.co/profile/launch-lab-1) - $1,000+ minimum project size - 10 - 49 employees - Ichikawa, Japan #### Services Provided - Allocation of Expertise by Percentage - 20% Branding - 20% Content Marketing - 20% Search Engine Optimization - 20% Application Testing - 20% Web Development #### Company description Launch Lab is an Ichikawa, Japan-based branding agency. Their services include Branding and Content Marketing. [Visit Website](https://launch-lab.jp/) --- ### [Company Removed](https://clutch.co/profile/company-removed) - $100,000+ minimum project size - $100 - $149 average hourly rate - Freelancer employees - Koto City, Japan #### Services Provided - Allocation of Expertise by Percentage - 15% Custom Software Development - 5% Enterprise App Modernization - 5% AI Development - 10% Cloud Consulting & SI - 5% Application Management & Support - 5% IoT Development - 5% IT Managed Services - 10% Cybersecurity - 10% Mobile App Development - 10% Robotics Process Automation - 10% Application Testing - 10% Web Development #### Company description Founded in 1977, PERSOL PROCESS & TECHNOLOGY is a custom software development firm. The large team offers Custom Software Development and cloud consulting & SI. [Visit Website](https://www.companytest.com) --- ### [Room 8 Group](https://clutch.co/profile/room-8-group) - 1,000 - 9,999 employees - Minato City, Japan #### Services Provided - Allocation of Expertise by Percentage - 15% UX/UI Design - 20% Custom Software Development - 15% Graphic Design - 30% Mobile App Development - 20% Application Testing #### Company description Room 8 Group, an app development firm, was founded in 2011. They specializes in Mobile App Development and Custom Software Development. [Visit Website](https://room8group.com/?utm_source=clutch&utm_medium=review&utm_campaign=room8group_clutchreview) --- ### [IB-Staff](https://clutch.co/profile/ib-staff) - $5,000+ minimum project size - $25 - $49 average hourly rate - 10 - 49 employees - Niigata, Japan #### Services Provided - Allocation of Expertise by Percentage - 10% UX/UI Design - 20% Custom Software Development - 10% E-Commerce Development - 10% Mobile App Development - 10% Application Testing - 10% IT Staff Augmentation - 10% Web Design - 20% Web Development #### Company description IB-Staff is a software development company in Niigata, Japan. Launched in 2020, the team specializes in Custom Software Development and Web Development. [Visit Website](http://ib-staff.com) --- ### [SORAMITSU | 2016-2025](https://clutch.co/profile/soramitsu-2016-2025) - 50 - 249 employees - Shibuya, Japan #### Services Provided - Allocation of Expertise by Percentage - 10% UX/UI Design - 20% Blockchain - 10% Blockchain Marketing - 10% Corporate Training & Coaching - 10% DevOps Managed Services - 10% Digital Strategy - 10% Cybersecurity - 10% Marketing Strategy - 10% Application Testing #### Company description SORAMITSU | 2016-2025 is a Blockchain company. Founded in 2016, the firm focuses on Blockchain and Marketing Strategy. [Visit Website](https://soramitsu.co.jp/) --- ### [Tinhvan Outsourcing JSC](https://clutch.co/profile/tinhvan-outsourcing-jsc) - $1,000+ minimum project size - < $25 average hourly rate - 50 - 249 employees - Shinagawa City, Japan #### Services Provided - Allocation of Expertise by Percentage - 30% Custom Software Development - 15% Enterprise App Modernization - 30% Mobile App Development - 10% Application Testing - 15% Web Development #### Company description Tinhvan Outsourcing JSC is a software development company. They specialize in Custom Software Development and Mobile App Development and were established in 2006. [Visit Website](http://tvo.vn/en/) --- ### [CodeComplete Vietnam](https://clutch.co/profile/codecomplete-vietnam) - $10,000+ minimum project size - < $25 average hourly rate - 50 - 249 employees - Meguro City, Japan #### Services Provided - Allocation of Expertise by Percentage - 10% Custom Software Development - 10% Enterprise App Modernization - 10% AI Development - 10% Blockchain - 10% E-Commerce Development - 15% Mobile App Development - 15% Application Testing - 20% Web Development #### Company description Website development company CodeComplete Vietnam was founded in 2015. Based in Meguro City, Japan and Danang, Vietnam, the team specializes in Web Development and Mobile App Development. [Visit Website](https://codecomplete.jp/) --- ### [Protean Studios](https://clutch.co/profile/protean-studios) - $5,000+ minimum project size - < $25 average hourly rate - 50 - 249 employees - Chuo City, Japan #### Services Provided - Allocation of Expertise by Percentage - 10% Custom Software Development - 10% AR/VR Development - 5% IoT Development - 5% IT Strategy Consulting - 10% Low/No Code Development - 20% Mobile App Development - 10% Application Testing - 30% Web Development #### Company description Protean Studios is a website development firm. In Hanoi, Vietnam and Hai Phong City, Vietnam, the agency was established in 2020. Their team specializes in Web Development and Mobile App Development. [Visit Website](https://proteanstudios.com) --- ### [InApp](https://clutch.co/profile/inapp) #### 4.9 out of 5 star rating (13 reviews) - $50,000+ minimum project size - $25 - $49 average hourly rate - 250 - 999 employees - Yokohama, Japan #### Services Provided - Allocation of Expertise by Percentage - 10% UX/UI Design - 30% Custom Software Development - 10% Cloud Consulting & SI - 20% Mobile App Development - 10% Application Testing - 20% Web Development #### Company description InApp is a versatile software development company specializing in a range of services, including mobile app, enterprise software, and cloud-based solutions development. Overall, their clients commend them for their project management, responsiveness, and ability to meet client specifications, with approximately 90% of reviews highlighting effective communication and commitment to deadlines. While a few clients note the need for clearer initial timelines, InApp is often praised for their adaptability and dedication to client success. [Visit Website](https://inapp.com/?utm_source=clutch.co&utm_medium=referral&utm_campaign=directory) --- ### [Robosoft Technologies Inc.](https://clutch.co/profile/robosoft-technologies) #### 4.7 out of 5 star rating (26 reviews) - $25,000+ minimum project size - $50 - $99 average hourly rate - 250 - 999 employees - Minato City, Japan #### Services Provided - Allocation of Expertise by Percentage - 15% UX/UI Design - 10% Custom Software Development - 50% Mobile App Development - 10% Application Testing - 15% Web Development #### Company description Robosoft Technologies Inc. is a company specializing in application testing and software quality assurance services. Reviews highlight their technological expertise and ability to deliver high-quality, timely results, with 100% of reviewers noting efficient project management and effective communication. Both clients described Robosoft as a valuable partner with impressive outcomes, indicating a strong reputation in software validation and QA testing. [Visit Website](https://www.robosoftin.com/contact?utm_source=clutch&utm_medium=referral&utm_campaign=clutch_profile) --- ### [FPT Software](https://clutch.co/profile/fpt-software) - $1,000+ minimum project size - < $25 average hourly rate - 10,000+ employees - Minato City, Japan #### Services Provided - Allocation of Expertise by Percentage - 10% AR/VR Development - 10% AI Development - 10% Blockchain - 10% Cloud Consulting & SI - 10% Digital Strategy - 10% E-Commerce Development - 10% IoT Development - 10% IT Managed Services - 10% Cybersecurity - 10% Application Testing #### Company description Founded in 1999, FPT Software, a large Digital Strategy company, is in El Segundo, California and Hanoi, Vietnam. Their team focuses on Digital Strategy and cloud consulting & SI. [Visit Website](https://www.fpt-software.com/) --- ### [Sollers Consulting](https://clutch.co/profile/sollers-consulting) - 250 - 999 employees - 千代田区, Japan #### Services Provided - Allocation of Expertise by Percentage - 20% AI Consulting - 20% BI & Big Data Consulting & SI - 20% Cloud Consulting & SI - 20% DevOps Managed Services - 20% Application Testing #### Company description Sollers Consulting, a big data analytics company, offer BI & big data consulting & SI and cloud consulting & SI. They were founded in 2000. [Visit Website](https://sollers.eu/) --- #### Get personalized agency matches based on your project goals. [Find the right fit](https://project.clutch.co/project-brief?source=directory_slide_in_CTA&BPB_adoption_source=directory) ## Why Trust Clutch At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences. 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