The XPath tester fully supports XML namespaces, but the declarations MUST be explicit and MUST be on the root XML element. See the XPath Examples section for details. Allows you to test your XPath expressions/queries against an XML file. This tool runs better than other existing XPath online tools as it supports most of the XPath functions.
XPath Development Tools. XPath (XML Path Language) is syntax for selecting the elements and attributes of an XML document by navigating its tree-like structure. Developers use XPath expressions to select XML nodes or node-sets based on a variety of criteria. There are three versions of XPath currently in use: 1.0, 2.0, and 3.0.
EditiX Free XMLEditor Lite is free for non-commercial environments and can be downloaded without registration here. Some Features: XSLT Editor and Debugger (1.0 and 2.0) Visual Schema Editor. XPath 1.0 and 2.0. Schema Generator (DTD, W3C XML Schema, XML Relax NG) from XML documents.

To get started, just click the Show XPath Query Editor button at the top of the XML Editor, or click View XPath Query Editor. Working With XPath Expressions. Using the XPath Query Editor is easy! Just type a valid XPath expression on the Query 1 tab. (This number is incremented for each new XPath query expression you create. The XPath tester fully supports XML namespaces, but the declarations MUST be explicit and MUST be on the root XML element. See the XPath Examples section for details. Allows you to test your XPath expressions/queries against an XML file. This tool runs better than other existing XPath online tools as it supports most of the XPath functions.

XMLQuire's XPath Editor has auto-complete, tracing, syntax-coloring, dynamic-evaluation features at its core.

Blended with a fully-featured XML Editor, a compelling new XPath test and development environment is now offered, building on our orginal SketchPath tool legacy.

XMLQuire is a free 3MB .exe download with no registration

Opening the XPath Editor

The XPath-Location bar, at the very top of the XMLQuire window, is the only visible part of the editor when XMLQuire opens. Double-Click on this for the full XPath Editor view. Alternatively, select the XPath tab on the Find dialog.

Xml Xpath Editor Chrome

Features

Full details are in theXMLQuire documentation, but here are just some of XMLQuire's XPath Features:

Xml Editor Online Xpath

.NET Framework XPath 1.0 processor*
XPath-Generation from text and node panes
Auto-Completion - with full predicate/fn context
Syntax Coloring
Expression Tracing for predicates/functions/nodes
Dynamic Evaluation - results as you type
XPath Help - Context-aware function help
Evaluation Context - Namespaces and Context Node
Results synchronised across outline and text views

Screenshot of XMLQuire's XPath Editor