Notepad3 is a lightweight text editor with the many features: code folding, bracket matching, automatic indentation, word auto-completion, convert character encoding between various formats (ASCII, UTF-8, and UTF-16), newline format conversion (between DOS (CR/LF), Unix (LF), and Macintosh (CR) formats), multiple undo or redo, bookmarks, and regular expression-based find and replace. Multi-language, dark mode and color preview many features have been added. Custom grepWin is also bundled. Although the Windows operating system was updated significantly over the past years. However, the default Windows Windows Notepad has very simply features since the 1980s. If you need a text editor for simple programming tasks, using the vanilla Windows Notepad just does not cut it. Enter Notepad3! Scintilla-based Notepad2, its successor Notepad2-mod, its successor Notepad3. Therefore, we created Notepad3 with all the features that the default Windows Notepad currently lacks. Notepad3 is a fast and light-weight Scintilla-based text editor with syntax highlighting. It has a small memory footprint, but is powerful enough to handle most programming jobs. Previously we mentioned that Notepad3 can handle almost any programming job and we are not lying. Just take a look at the list of supported programming languages below and spot your favorite. Syntax highlighting support for over 50 languages: ASP, assembly language, AutoHotkey, AutoIt3, AviSynth, Bash, BAT, C, C++, C#, CMake, CoffeeScript, Common Gateway Interface (CGI), Cascading Style Sheets (CSS), DIFF, HTML, INF, INI, Inno Setup, Java, JavaScript, LaTeX, Lua, Markdown, NSIS, Pascal, Perl, PHP, Python, REG, Ruby, SQL, Tcl, Visual Basic (VB), VBScript, VHDL scripts, XHTML, XML, YAML, D Source Script, Go Source Script, JSON, Makefiles, MATLAB, Nim Source Code, Power Shell Script, Resource Script, Shell Script, R, S, S-Plus, Kotlin, Windows Registry files, configuration files, and improved support for NFO ANSI art.