DOCX is an archive file that can be unpacked by a third-party program. This format is an upgraded version of the well-known DOC extension. A significant difference is a low file weight while maintaining all the original image parameters. If .doc is a binary text file, .docx contains XML files and additional folders when the file compression reduces its size. This is a universal format that can easily be read by almost any email client, cloud storage and text editors on your mobile device.You can use the following programs to work with docx: WindowsWord, Libre Office, Open Office, Word Pad, AiReader, Ice Book Reader, Caliber, Universal Viewer, Text Maker, Ability Write. This is just a small list of the huge number of programs that can open files in DOCX format. I wrot ...