| .bad |
Exchange Badmail File |
| .bdp |
Exchange Diagnostic Message |
| .bna |
Barna Word Processor Document |
| .brx |
BREW Application Resource File |
| .bzabw |
Compressed AbiWord Document |
| .btd |
Business-in-a-Box Document |
| .bibtex |
BibTeX Bibliography Database |
| .bbs |
Bulletin Board System Text |
| .cod |
Compiled Source Code |
| .charset |
Character Set |
| .chord |
Song Chords File |
| .cyi |
Clustify Input File |
| .crwl |
Windows Crawl File |
| .cnm |
NoteMap Outline File |
| .cws |
ChordWizard Song |
| .calca |
Calca Document |
| .chart |
Guitar Rhythm Chart File |
| .doc |
Microsoft Word Document |
| .docx |
Microsoft Word Open XML Document |
| .dwd |
DavkaWriter File |
| .dxb |
Duxbury Braille File |
| .dvi |
Device Independent Format File |
| .diz |
Description in Zip File |
| .dsc |
Kingsoft Design Science Equation File |