.kindle file: how to open it on Windows

1 Windows app registers the .kindle extension. Install one of them to open the file with a double-click.

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  DarkThumbs

  Adds thumbnail preview to Windows Explorer for EPUB, FB2 and Kindle ebooks; CBZ, CBR, RAR and ZIP archives.

  Free 2.1 ★ 666

Related guide: Change the default app for a file type in Windows