Common file extensions that are good to know, organized by file format. Text Files .DOC Microsoft Word Document .DOCX Microsoft Word Open XML Document .LOG Log File .MSG Outlook Mail Message .ODT OpenDocument Text Document .PAGES Pages Document .RTF Rich Text Format File .TEX LaTeX Source Document .TXT Plain Text File .WPD WordPerfect … [Read more...] about Commonly Used File Types & File Extensions | Home Trainer