https://www.fileviewpro.com/en/file-extension-wml/
FileViewPro is an all-in-one file viewer that facilitates the process of opening multiple file formats, providing users with a smooth and convenient way to manage their digital content. Among the diverse range of file types that it supports, one particularly useful feature is its ability to handle WML files. WML, or Wireless Markup Language, is a file format associated with mobile web pages, particularly in first-generation mobile devices that relied on WAP (Wireless Application Protocol) to access the internet. With the progress of mo