Developed a Tree-sitter powered plugin for Notepad++ in the nppPluginList repository, delivering multilanguage syntax highlighting and code folding to enhance code readability and navigation. The work focused on integrating Tree-sitter with the Notepad++ plugin architecture, enabling accurate cross-language parsing and efficient code folding for various programming languages. Leveraging skills in plugin development, code folding, and syntax highlighting, the solution was designed for scalability and future language support. The implementation improved the debugging and onboarding experience by making code structure clearer, and no major bugs were reported during the period, reflecting a stable and well-integrated technical contribution.