Altova XMLSpy - The XMLSpy XML Editor is a powerful tool for editing XML and related technologies. It is the only XML Editor with patented SmartFix validation, enterprise-grade editors, converters, debuggers, and code generators.

Notepad++ - A free source code editor which supports several programming languages running under the MS Windows environment.

XML Copy Editor - XML Copy Editor is a fast, free, validating XML editor.

Atom - At GitHub, we’re building the text editor we’ve always wanted: hackable to the core, but approachable on the first day without ever touching a config file. We can’t wait to see what you build with it.

Oxygen XML Editor - Oxygen XML Editor provides a comprehensive suite of XML authoring and development tools.

Visual Studio Code - Build and debug modern web and cloud applications, by Microsoft