Xmplify

About

Xmplify is a 64-bit native Mac XML editor that analyses your XML as you type. It uses DTD or XML Schema definitions for auto-completion, with documentation shown for each suggestion, and for automatic document verification that stays up to date as you edit. An Outline view shows your document's structure. If your document has no DTD or schema, Xmplify derives one automatically from your XML and can derive it from multiple source documents. Its Goto Specification feature jumps to the relevant definitions.

Xmplify also supports XSLT and XPath. It includes a built-in XSLT 1.0 processor (libxslt) and supports external processors, including XSLT 2.0 and 3.0 processors such as Saxon and Xalan. Its Web Preview shows (X)HTML documents and keeps them updated as you edit. Built-in incremental search supports regular expressions, and you can run XPath queries and select matching nodes.

Xmplify runs natively on both Intel and Apple Silicon Macs and requires macOS 10.13 High Sierra or later. It costs $79, with an educational discount available.