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XML Marker is a specialized Windows-based editor designed for viewing and editing large XML files. Unlike basic text editors (Notepad) or complex IDEs (Visual Studio Code), XML Marker uses a synchronized table-tree-and-text display. Version 22 (likely a typo or misremembered version number—the last major release was XML Marker 2.2 or similar) is sought after for its ability to handle files over 100MB without crashing, offering:

The software is proprietary, created by SymbolClick, and requires a paid license for continued use beyond a 30-day trial period.

Not publicly advertised. You can contact their sales team directly. However, given the low price point ($40), they rarely offer special discounts.

If you're having trouble finding a license or need help with a purchased product:

| Software | Platform | Best For | Key Feature | | :--- | :--- | :--- | :--- | | XML Notepad (Microsoft) | Windows | Basic editing | Tree view + grid | | Oxygen XML Editor (Free version) | Windows, Mac, Linux | Education/Personal | Powerful XPath | | Notepad++ (with XML Tools plugin) | Windows | Lightweight coding | Plugin ecosystem | | Visual Studio Code (with Red Hat XML extension) | All platforms | Developers | IntelliSense, validation | | Sublime Text (unregistered trial) | All platforms | Speed | Indefinite trial period |

These tools are completely free, open-source (or freeware), and do not require any license key. They also pose zero malware risk if downloaded from official repositories.


Use the trial period to verify that XML Marker 22 solves your XML editing needs. Check if it handles your file sizes and if the interface works for you.

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