| Name | Extension(s) | MIME Type | Description |
| HyperText Markup Language | .html .htm | text/html | The basis for the World Wide Web |
| u-law | .au | audio/basic | Sun u-law files in 8 kHz audio format. Low Quality |
| Wave files | .wav | audio/x-wav | Microsoft's custom audio format |
| Audio Interchange File Format | .aiff .aif .aifc | audio.x-aiff | Audio formats commonly used on Macintoshes |
| Macintosh Sound | .snd | audio/basic resource file | old style Macintosh sound file |
| MIDI formats | .mid .midi | audio/midi audio/x-midi | MIDI digital music interface coding |
| Real Audio | .ra .ram | audio/x-pr-realaudio | Progressive Networks Real Audio for streaming and pseudo-streaming of high quality sound (now most used format |
| Moving Pictures Expert Group Standard (MPEG) | .mpg .mpeg .mp2 | audio/x-mpeg | Digital-quality (possibly) audio playable on all platforms. Can be streamed or downloaded or accompanied by a movie |