Outsourcing software testing is an effective way to simultaneously improve quality and streamline operations. Not only does it allow for objective checks from a third-party perspective, but it also enables your company to focus internal resources on core operations.
However, not all outsourcing providers are the same. Each company has different scopes of service and areas of expertise, so careful selection is necessary to find the best fit for your company's needs.
"I'm wondering whether I should outsource software development."
"I want to find an outsourcing provider that fits my company for software testing."
This article introduces 10 recommended companies for software testing. It also provides a clear summary of what software testing is and the benefits of outsourcing.
If you're considering outsourcing software testing, be sure to use this as a reference.

Akira Shimazoe
CEO of Solashi Japan LLC. Engaged in the development and operation of internal systems at Suntory. Founded Yper Inc., serving as CTO and CPO, contributing to product launch and growth.
What is Software Testing?
Software testing is the process of verifying whether a developed system contains any bugs or other issues. Through software testing, you can detect and correct unexpected behaviors or hidden problems in advance.
This enables you to provide users with a safe and user-friendly system. Software testing is one of the essential steps to improving the quality of a system.
Benefits of Outsourcing Software Testing
Below are some of the benefits of outsourcing software testing.
- Allows for third-party review
- Ensures high-quality testing
- Lets your company focus on core operations
Let’s take a closer look at each.
Allows for third-party review
One of the major benefits of outsourcing software testing is that you get a third-party perspective. Since the review is done by someone not directly involved in development, they're more likely to catch issues that your in-house team might overlook.
This increases the chances of releasing a system with higher quality.
Ensures high-quality testing
Companies specializing in software testing possess expertise in testing methodologies and the latest skills. As a result, they can provide more efficient and higher-quality testing. You can confidently delegate complex tasks such as designing test cases based on complex scenarios and using automated testing tools that require advanced knowledge.
Lets your company focus on core operations
By outsourcing the testing process, you can allow internal personnel to focus on core business activities. This is a major advantage, especially for companies facing a shortage of IT personnel, as it allows them to make the most of their valuable human resources.
This leads to improved operational efficiency and better allocation of resources to more strategic initiatives.
Typical Cost of Outsourcing Software Testing
The cost of outsourcing software testing can vary greatly depending on the scale and complexity of the system.
For small and simple systems, the number of test items is limited, so outsourcing can start from a few hundred thousand yen.
For large and complex systems, it's not uncommon for costs to exceed several million yen.
Costs also vary depending on the outsourcing provider. Since each company sets its pricing based on its area of expertise and scope of services, it's important to request quotes from multiple testing companies and compare them.
Our company, Solashi Co., Ltd, is an offshore company based in Vietnam. Taking advantage of Vietnam’s abundant IT talent and low cost of living, we provide high-quality services at competitive prices. Please feel free to contact us if you're interested.
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5 Software Development Companies Specializing in Software Testing
Here we introduce five companies that excel in software testing. Below, we’ll go over the features and strengths of each company.
- SHIFT Inc.
- ELECS Inc.
- Veriserve Corporation
- Techban Co., Ltd.
- VES Corporation
1. SHIFT Inc.
SHIFT Inc. provides third-party verification and quality assurance services for software.
The company enhances quality through its unique testing methodology. By thoroughly breaking down and standardizing the software testing process, they ensure higher quality. They offer consistent quality assurance services from the upstream to the downstream phases of development and have the flexibility to join at any phase.
With over 3,000 service deployments and 4,000 projects annually as of April 2024, they have extensive experience. This company is recommended for those who want to work with a proven leader.
Item | Details |
Company Name | SHIFT Inc. |
Established | 2005 |
Capital | 11 million yen |
Headquarters | Azabudai Hills Mori JP Tower, 1-3-1 Azabudai, Minato-ku, Tokyo |
Main Features | Offers consistent services from planning to quality using a proprietary test method. |
Website | https://service.shiftinc.jp |
2. ELECS Inc.
ELECS Inc. is a development company that offers a wide range of services including digital marketing support, IT implementation, and DX promotion.
The company applies its 25 years of development experience and strong analytical skills to third-party software verification. Their consultants design tests suited to the development phase and plan optimal testing strategies based on budget and schedule.
They also handle advanced testing that requires distinguishing whether issues stem from hardware or software.
If you're looking for strategic support from test proposal to implementation, consider consulting with ELECS Inc.
Item | Details |
Company Name | ELECS Inc. |
Established | 1993 |
Capital | 48 million yen |
Headquarters | Takasago Park Space Building, 3-6-19 Takasago, Urawa-ku, Saitama City, Saitama Prefecture |
Main Features | Consultants design tests according to development status and develop optimal plans based on budget and timeframe. |
Website | https://www.elecs-web.co.jp |
3. Veriserve Corporation
Veriserve Corporation is a long-established company with over 40 years of experience in software testing.
As a pioneer in third-party testing, the company supports high-quality software development through standardized testing techniques, covering everything from test strategy and analysis to implementation.
- Fewer test cases
- More bugs detected
- Thorough test coverage
These three goals are achieved through their “Basic Test Design” phase.
The company also offers a cloud-based tool called “GIHOZ” that supports various testing techniques. A free starter plan is available, making it a good choice if you want to try out tools first.
Item | Details |
Company Name | Veriserve Corporation |
Established | 2001 |
Capital | 792 million yen |
Headquarters | 9F Jimbocho Kita Tokyu Building, 3-1-16 Kanda Misaki-cho, Chiyoda-ku, Tokyo |
Main Features | Supports high-quality development using standardized testing techniques. Covers everything from test strategy to analysis and implementation. |
Website | https://www.veriserve.co.jp/ |
4. Techban Co., Ltd.
Techvan Co., Ltd. is a system integrator that contributes to clients' businesses and society through cutting-edge technology. A key feature is that many of its employees hold professional certifications, enabling the company to provide high-quality services.
The company supports a wide range of testing operations, from software testing during development to user-perspective testing. They objectively verify software from various perspectives as a third party, helping to improve software quality.
They approach testing with a focus on “What should be done to improve quality in response to client and user requirements?” Without deviating from the original purpose of the test, they provide efficient software testing.
If you’re seeking more objective feedback, consider consulting with this company.
Item | Details |
Company Name | Techvan Co., Ltd. |
Established | 1996 |
Capital | 100 million yen |
Head Office Address | Yokoso Rainbow Tower 4F, 3-20-20 Kaigan, Minato-ku, Tokyo |
Main Features | Supports a wide range of testing operations, from development-stage software testing to end-user perspective testing. |
Website | https://www.techvan.co.jp/ |
5. VES Corporation
VES Corporation is a specialized company that conducts third-party verification of various software and IT products. They provide high-level software testing for a wide range of industries and sectors.
The company offers software verification services, including embedded systems. It also responds to various needs such as upstream process verification services and agile development verification services.
If you want to reduce rework in upstream processes or automate testing, VES Corporation is a recommended option.
Item | Details |
Company Name | VES Corporation |
Established | 2003 |
Capital | 10 million yen |
Head Office Address | Ebisu Garden Place Tower 5F, 4-20-3 Ebisu, Shibuya-ku, Tokyo |
Main Features | Provides advanced software testing for a wide range of industries and sectors. |
Website | https://www.ves.co.jp/ |
Top 5 Software Testing Companies Offering Flexible Development Services
Below are companies known for their flexibility in software testing. These are ideal if you have complex requirements or are unsure where to start.
- Solashi Co., Ltd
- Rakudo Inc.
- Plus Knowledge Inc.
- HITEX Inc.
- Kuroto Inc.
Let’s explore the appeal and features of each company.
1. Solashi Co., Ltd
Solashi Co., Ltd is an offshore development company based in Vietnam. Leveraging Vietnam's abundant IT talent, they build a team of engineers well-versed in advanced technologies. Their key strength lies in their ability to make proposals that drive client business growth. Experienced Japanese staff who understand the business provide optimal solutions tailored to each need.
For software testing, experienced dedicated testers create comprehensive test cases and conduct high-quality verifications. Solashi's testers are also skilled in project management, providing seamless support from test planning to execution and result analysis.
They also offer competitive pricing by utilizing the advantages of offshore development. If you’re interested in high-quality services delivered by professionals with expertise in the latest technology, be sure to contact Solashi Co., Ltd.
Item | Details |
Company Name | Solashi Co., Ltd |
Established | 2019 / 2022 |
Capital | Approximately 30 million yen |
Head Office Address | billage SHIBUYA Ninomiya Building 1F, 18-4 Sakuragaoka-cho, Shibuya-ku, Tokyo |
Main Features | Provides consistent support from consulting and development to maintenance and operation, including testing. |
Website | https://solashi.com/ |
2. Rakudou Co., Ltd.
Rakudou Co., Ltd. is a system development company headquartered in Shinjuku-ku, Tokyo. The company specializes in scratch development and also places a strong focus on software testing.
The company offers an on-demand service called “TESTERA” that matches clients with testers. It supports test design for various phases and allows flexible testing based on budget and schedule.
They also support the automation of software testing. If you're unsure about how to proceed with your software testing, it may be worth consulting with them.
Item | Details |
Company Name | Rakudou Co., Ltd. |
Founded | 2006 |
Capital | 10 million yen |
Head Office Address | 5F Tamagawa Shinjuku Building, 2-9-22 Shinjuku, Shinjuku-ku, Tokyo |
Main Features | In-house development of the on-demand service “TESTERA” that matches clients with testers. |
Website | https://www.rakudou.co.jp/ |
3. Plus Knowledge Inc.
Plus Knowledge Inc. is a system development company based in Uruma City, Okinawa Prefecture. They handle a wide range of evaluations for web and mobile applications, as well as automotive software evaluations.
Their strength lies in test design that minimizes communication loss, with the company managing operations on the Okinawa side. Since their test development team can also be stationed in the development environment, smooth communication is possible.
If you're looking for a company with flexibility and high technical capabilities, Plus Knowledge Inc. is highly recommended.
Item | Details |
Company Name | Plus Knowledge Inc. |
Established | 2005 |
Capital | 27.83 million yen |
Head Office Address | 5th Facility, Okinawa IT Shinryo Park, 14-10 Suzaki, Uruma City, Okinawa Prefecture |
Main Features | Effective use of nearshore development, especially for automotive software evaluations |
Website | https://plusknowledge.co.jp/ |
4. Hitechs Inc.
Hitechs Inc. is a system development company that handles everything from software development to maintenance and operation.
They not only support new development but also system renovations. Their system engineers handle everything from design and development to comprehensive testing. If you want a one-stop solution from consulting onward, they are a solid choice.
They specialize in industries such as manufacturing, telecommunications, construction, healthcare, finance, and food services. If your company is in one of these industries, Hitechs could be a great partner.
Item | Details |
Company Name | Hitechs Inc. |
Established | 1987 |
Capital | 15 million yen |
Head Office Address | Toyama Office: 6-2-7 Mukai-Shinjocho, Toyama City, Toyama Prefecture Kurobe Office: Sun Building 3F, 101 Shinmakino, Kurobe City, Toyama Prefecture Tokyo Office: Kaede Building 3F, 2-3-6 Uchikanda, Chiyoda-ku, Tokyo |
Main Features | Strong in sectors such as manufacturing, telecommunications, construction, healthcare, finance, and food |
Website | https://hitechs.co.jp/ |
5. CLOTO Inc.
CLOTO Inc. is a development company that provides one-stop solutions related to the web, including website creation, system development, and web advertising.
They offer support services for building test and verification environments according to client needs. This is ideal for companies aiming to improve the quality of their deliverables through enhanced quality control systems.
If you're looking to absorb specialized know-how while planning to internalize quality checks in the future, CLOTO is a great company to consult.
Item | Details |
Company Name | CLOTO Inc. |
Established | Unknown |
Capital | 10 million yen |
Head Office Address | SNUG MINAMI-AZABU 401, 2-8-21 Minami-Azabu, Minato-ku, Tokyo |
Main Features | Offers support services for building test and verification environments based on client requests |
Website | https://clo-tho.com |
6 Key Points for Choosing a Software Testing Company
Below, we explain the key points for choosing a software testing company.
- Request quotes from multiple companies
- Check if they have the technical skills you require
- Choose a company with a strong track record
- Select a company that provides proper feedback
- Go with a company that offers reasonable pricing
- Make sure their security measures are reliable
If you're currently selecting an outsourcing partner, be sure to use this as a reference.
Request quotes from multiple companies
When outsourcing software testing, it's important to get quotes from multiple development companies and compare them. Each company has different strengths and pricing models, so by comparing several, you can better identify their pros and cons. We recommend comparing at least three companies.
You can also evaluate each company’s response speed and proposal quality during the quote process. This will help you find the outsourcing partner that best fits your needs.
Check if they have the technical skills you require
When choosing an outsourcing partner, it’s essential to select a company that has the technical expertise and specialization suited to your software under test. Make sure they possess the technical capabilities that match your needs.
For example, check if they are proficient in specific programming languages or frameworks, or if they have experience with security testing. Choosing a company that matches your requirements ensures high-quality testing.
Choose a company with a strong track record
By selecting a company with extensive experience in software testing, you can expect more effective testing results. Ideally, find a company with case studies similar to your own needs. These companies can leverage their knowledge and experience to perform testing efficiently.
We recommend checking each company’s track record in advance via their official website or case studies.
Select a company that provides proper feedback
Proper feedback is also critical in software testing. If bugs are found, companies that provide clear explanations along with improvement suggestions can be a great asset in your system development process.
Be sure to check what kind of documentation the company will provide in detail.
Go with a company that offers reasonable pricing
Software testing costs can vary significantly between companies. Services and pricing structures also differ, making direct comparison difficult. So, consider the total cost to judge whether the price is reasonable.
However, if you focus too much on price, you may risk compromising service quality. Check both cost and service content, and choose a company that offers good cost-effectiveness.
Make sure their security measures are reliable
Since your software may contain confidential information, it’s important to select an outsourcing partner with solid security measures in place. Consider the following points:
- Has obtained security certifications such as ISO27001
- Meets your company's internal security policy standards
If you have any security-related concerns, don’t hesitate to ask questions. This not only helps you understand their security practices but also allows you to share your own security requirements clearly.
For Software Testing, Consult the Offshore Development Company “Solashi” in Vietnam
This article introduced an overview of software testing, the benefits of outsourcing, and how to choose the right company. By outsourcing software development, you can receive more appropriate feedback and expect improved system quality.
However, each outsourcing partner varies in terms of skills, specialties, and areas of service. That’s why it’s crucial to choose a partner that meets your company’s needs.
If you're unsure about where to outsource your software testing, we recommend consulting with Solashi Co., Ltd. Solashi is an offshore development company based in Vietnam. Leveraging Vietnam’s abundance of IT talent and lower cost of living, we provide high-quality services at low cost.
We have several experienced Japanese project managers on staff, so even if it’s your first time outsourcing system development overseas, you can rest assured. If you're interested, feel free to contact Solashi Co., Ltd.

Akira Shimazoe
Representative of Solashi Japan LLC. Born in April 1989 in Fukuoka Prefecture. Graduated from the Graduate School of Information and Mathematical Sciences at Osaka Prefecture University. Joined Suntory System Technology Co., Ltd., an IT subsidiary of Suntory Holdings, in 2014. Broadly responsible for the development, operation, and implementation of vending machine delivery management, efficiency improvements, and sales management systems. Founded Yper Inc. in 2017, serving as CTO and CPO. Contributed to the launch and growth of the app-linked delivery bag "OKIPPA." Selected for Toyo Keizai's prestigious "Amazing Venture 100" and Forbes' "Forbes 30 Under 30 Asia 2019."