If you want to create such an index for your own files:

| Task | Recommended Application | | :--- | :--- | | Writing a formal letter | Word | | Calculating a budget | Excel | | Pitching a business idea | PowerPoint | | Managing email & appointments | Outlook | | Taking meeting notes | OneNote | | Chatting with colleagues | Teams | | Creating a flowchart | Visio (or PowerPoint shapes) | | Designing a flyer | Publisher |

Allow users to point to a folder (local or network) and see a sortable, filterable index of all Office files.

Key sub-features:

Quick C# (Windows) example to index Office files:

var officeFiles = Directory.GetFiles(@"C:\Docs", "*.*", SearchOption.AllDirectories)
    .Where(f => new[]  ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx" 
        .Contains(Path.GetExtension(f).ToLower()));

When a web server (e.g., Apache, Nginx) has directory listing enabled and no default index file (like index.html) exists, it displays an Index of /[folder] page. This lists all files and subdirectories, often with:

These listings are not controlled by Microsoft Office itself — they are server-side directory indexes.

An "Index of" page is a directory listing automatically generated by a web server (usually Apache or Nginx) when no default file (like index.html) exists. It looks like a simple file browser showing folders and files on the server.

A typical "Index of /ms-office" page might display:

Parent Directory
MS Office 2019/
MS Office 2016/
Office_Templates/
setup.exe
README.txt

These directories were originally intended for legitimate file sharing within organizations. However, many are accidentally left open to the public, creating a treasure trove for anyone who stumbles upon them.