A txt file is a text file and can be viewed using any text editor: vim, emacs, pico, nano, etc. from the Linux machines. These also work on the Mac’s, as does TextEditor.app. On Windows, try the Notepad.
There are also handfuls of document editors that run as GUI’s: TextEditor.app, MS Word, OpenOffice.org – Writer, etc.
Posted in: Microsoft Files, Software