Greeting from the Representative: Fumihiro Matsui
Hello, my name is Fumihiro Matsui (松井文宏), the representative of RINEARN.
Welcome - About RINEARN
Thank you for visiting the RINEARN website. RINEARN is a software development studio I operate independently as a sole proprietorship. Allow me to provide a brief introduction, including some background about myself and the journey of RINEARN so far.
About RINEARN, its software, and its activities
Perhaps - more likely than not - you have come across this site after using one of the freeware tools developed and published by RINEARN. In fact, this website originally started as a "repository" for distributing such creations during my student years, more than 15 years ago.
At that time, I was majoring in physics at university, frequently engaging in numerical calculations and data analysis. As a programming enthusiast, I genuinely enjoyed these tasks. Over time, I began creating my own analysis software, and since I had gone through the trouble of developing them, I decided to share them publicly.
To make the website more lively, I also started uploading simple programs and sample code for calculations and visualizations, almost like writing blog posts.
Initially, this site was just a personal homepage for showcasing my hobby creations. However, some of these creations seemed to fulfill niche demands. Unexpectedly, they found use in various contexts, and I received feedback from users. These interactions led to surprising connections and exchanges, which turned out to be quite enjoyable. Before I knew it, I had been maintaining the site for over a decade.
Transitioning into a Sole Proprietorship Studio - Present Day
By then, I was no longer a student and had started writing programs professionally. At one point, I decided to establish a sole proprietorship studio. Over the years, this site and my creative activities had grown to hold a special significance for me, so I formally adopted the site name 'RINEARN' as the business name. This marked the official beginning of RINEARN as a software development studio in 2018.
Even after transitioning to a business, I continue to develop and release the analytical freeware tools and various programs that RINEARN originally focused on, treating them as part of my contribution efforts. I hope to keep these activities going as much as possible. This is because I, too, have relied on many free analysis/calculation software tools, libraries, and sample code from my student days to the present. Continuing these efforts is my way of giving back, albeit in a small way, and I hope they can be of use to others.
- RINEARN Announcements (News) Page
- This section provides updates on software releases, updates, and website news.
- RINEARN Official X (Twitter) Account
- New announcements are also posted from the above X (Twitter) account. Feel free to ask any questions there as well.
- Personal X (Twitter) Account
- This is the representative's personal X (Twitter) account.
- Vector Software News (June 10, 2010, Japanese Web Media)
- Monthly Mr.PC, September 2010 Issue (July 24, 2010, Japanese Magazine)
- Monthly Mr.PC, June 2011 Issue (April 24, 2011, Japanese Magazine)
- Hall of Free Software (July 15, 2011, Japanese Mook Magazine)
- Vector Software News (July 30, 2014, Japanese Web Media)
About Our Services (Business Activities)
As mentioned earlier, RINEARN currently operates as a development studio and freelance engineer, accepting work requests primarily in Japan. While the primary focus is on development and analytical tasks, as shown in the examples below, I can generally handle a wide range of requests within the scope of my capabilities.
Business Activities
Here are examples of the types of work I undertake.
- Software Development
- I accept requests for the development of new software, or for subcontracted tasks involving partial development of other developers' software projects.
- Various Work Assistance and Support
- I provide support or take on delegated tasks to assist with other company's operational activities. (Think of it as a "helping hand" service.)
- Customization and Support for Existing Software
- As part of the above services, I also handle modifications or extensions to existing code upon request, if possible. Additionally, I provide support for introducing software into specialized use cases, as well as related development tasks.
Qualifications and Skills
- Ph.D. in Science (Physics)
- In the past, I conducted simulations of quantum systems in the field of physics (Quantum Chaos), involving complex matrix operations, eigenvalue/eigenvector analysis, and statistical analysis.
- Applied Information Technology Engineer Certification (National Exam in Japan)
- Certified in 2018, with elective subjects including "Information Security, Programming, System Architecture, Embedded System Development, and Information System Development."
- Supported Programming Languages (in order of usage frequency)
- Java, C/C++, Python, JavaScript/TypeScript, C#, VB.NET, PHP, Fortran, and others (Recently, I have also been exploring Rust.)
- Examples of Services Provided
- Design and implementation of application software, extensions and modifications of existing software, rendering/visualization/GUI-related work, various data analyses including matrix analysis and Fourier analysis, and other tasks as required.
Contact Information
Feel free to reach out!
- Email and Web Form
- You can find a web contact form on the page linked above, as well as an email address. Please don't hesitate to get in touch if you have any questions or concerns.
- We also accept inquiries on X (Twitter)
- Our official X (Twitter) account also accepts questions. Feel free to ask about anything, such as tips or clarifications regarding the use of our software.
