According to the Codeplex Web site it moved in 2016 to GitHub.

This tool helps create and manage the Enterprise Mode Site List in the v.2 XML schema for Enterprise Mode. CloseDirectX End-User Runtime Web Installer. Download DirectX End-User Runtime Web Installer. XML Notepad 2.6 was released in 2014 containing various bug fixes reported by community on codeplex. Selecting a language below will dynamically change the complete page content to that language. The new version featured several bug fixes, Windows Vista compatibility and updated Aero-style computer icons. XML Notepad 2007 was released eight months after the release of XML Notepad 2006. However, because of high demand, a replacement was written in C# by Chris Lovett using the System.Xml library of the. The original XML Notepad was written in 1998 by Murray Low in C++, but was eventually removed from Microsoft Developer Network (MSDN) due to its lack of support for modern XML standards and no maintenance. The program's source code was made available on CodePlex on 20 April 2007, and moved to GitHub in April 2016.

The editor also features an HTML viewer for displaying XSLT transformation results and a built-in XML comparison tool. The editor has good performance on large XML documents and has real time XML schema validation. The editor features incremental search in both tree and text views, drag/drop support, IntelliSense, find/replace with regular expressions and XPath expressions, and support for XInclude. XML Notepad is an open-source XML editor written by Chris Lovett and published by Microsoft.

Microsoft xml editor windows 10