Notepad++ (sometimes npp or NPP) is a text and source code editor for use with Microsoft Windows. It supports tabbed editing, which allows working with multiple open files in one window. The program's name comes from the C postfix increment operator.
Notepad++ is released as free and open-source software under a GNU General Public License (GPL) 3.0 or later. At first, the project was hosted on the SourceForge software repository (2003–2010), from where it was downloaded over 28 million times, and twice won the SourceForge Community Choice Award for Best Developer Tool. Then, the project moved to TuxFamily (2010–2015), and then to GitHub (2015–present). Notepad++ uses the Scintilla editor component.