Dimension scores are derived from public data and fields; weighted into the composite. Reference only.
Haijin Boys Online is a Japanese personal website operated by Kuro. Its core focus is the development and release of the free text editor “Mery,” alongside blog posts about software, electronics projects, DTM, Amazon, and related topics. From a developer-tool perspective, Mery is the main product: the site regularly publishes beta versions, theme collections, usage tips, and provides access to a forum.
Based on the crawled content, Mery is aimed at lightweight text editing as well as code and script editing. The newer v3.8.6 release notes mention QuickJS support for its macro language, enabling more flexible automation with modern JavaScript syntax. It also supports customizable Japanese line-breaking rules, making it suitable for fine-tuning Japanese typography. Earlier versions mention practical features such as automatic file encoding detection via uchardet, dark mode support for common dialogs, auto-save, and backups. The site also offers color theme collections and an article featuring 101 themes, suggesting an active ecosystem for visual customization.
The content explicitly describes Mery as a “free text editor” (“フリーのテキストエディタ”), and the theme files are also marked as free. The sidebar includes entries such as “development support,” “web tipping,” “donation,” and “software purchase,” but the crawled content does not list prices, licensing terms, or payment channels. As for open source, the content does not show a source-code repository, license, or open-source statement, so it is not possible to determine whether Mery is open source.
Its strengths are that it is free, has been maintained over the long term, and stays focused in scope. It also offers macro automation, theme resources, a forum, and practical tips, making it relatively easy for individual developers and writers to get started. The downsides are that the site content is mainly a Japanese blog-style listing, with no clearly visible full product documentation, system requirements, plugin/API documentation, or enterprise support information in the crawled content. For Chinese-speaking users, the language barrier is fairly noticeable.
Mery is suitable for individual users and developers who need a lightweight text editor, prefer theme customization, and occasionally want to automate tasks with JavaScript macros. It is especially well suited to Japanese-language environments. The crawled content does not allow us to determine accessibility from mainland China, and payment methods are not disclosed. If access or language becomes inconvenient, alternatives such as Visual Studio Code, Notepad++, Sublime Text, EmEditor, and Kate may be worth considering.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on haijin-boys.com official site.
haijin-boys.com is an Japan Dev Tools provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Workable. Click "Visit Official Site" to reach haijin-boys.com directly.