'''XML Notepad''' is an [[open-source]] [[XML editor]] written by Chris Lovett and published by [[Microsoft]].<ref name="design" /> The editor features [[incremental search]] in both tree and text views, drag/drop support, [[DragIntelliSense]], find/replace with [[regular expression]]s and drop[[XPath]] expressions, and support for XInclude.<ref name="design" /><ref name="download details" /> The editor has good performance on large XML documents and has real time XML schema validation.<ref name="design" /> The editor also features an HTML viewer for displaying [[XSLT]] transformation results and a built-in XML comparison tool.<ref>{{cite web|url=http://blogs.msdn.com/b/xmlteam/archive/2006/09/05/741251.aspx|title=XML Notepad 2006|work=Microsoft XML Team Blog|publisher=[[Microsoft]]|date=5 September 2006|accessdate=16 July 2010|first=Chris |last=Lovett}}</ref>
|drag & drop]] support, [[IntelliSense]], find/replace with [[regular expression]]s and [[XPath]] expressions, and support for XInclude.<ref name="design" /><ref name="download details" /> The editor has good performance on large XML documents and has real time XML schema validation.<ref name="design" /> The editor also features an HTML viewer for displaying [[XSLT]] transformation results and a built-in XML comparison tool.<ref>{{cite web|url=http://blogs.msdn.com/b/xmlteam/archive/2006/09/05/741251.aspx|title=XML Notepad 2006|work=Microsoft XML Team Blog|publisher=[[Microsoft]]|date=5 September 2006|accessdate=16 July 2010|first=Chris |last=Lovett}}</ref>
The program's source code was made available on [[CodePlex]] on 20 April 2007 and moved apparently to [[GitHub]] in April, 2016.<ref>{{cite web|url=http://blogs.msdn.com/b/xmlteam/archive/2007/04/20/xml-notepad-source-code-on-codeplex.aspx|title=XML Notepad Source Code on CodePlex|work=Microsoft XML Team Blog|publisher=[[Microsoft]]|date=20 April 2007|accessdate=16 July 2010|first=Chris |last=Lovett}}</ref><ref name="Microsoft pages of github" />
