| name | mediatype | type | date released | Extension | Latest version | Magic number | Open format | Standard | Website | file |
|---|---|---|---|---|---|---|---|---|---|---|
| Vorbis | Application | Audio | 08/05/2000 | .ogg .oga | Yes | Specification | Website | |||
| Opus (audio format) | Audio | Audio | 11/09/2012 | .opus | 1.1.3 | Yes | RFC 6716 | Website | ||
| QCP | Audio | Audio | 08/1999 | .qcp | RIFF ... QLCM | MIME Type Registration of RTP Payload Formats | Website | |||
| SILK | Audio | Audio | 03/2009 | .sil, .SIL | #!SILK\n | Internet Draft | Website | |||
| SlotRadio | Audio | 2009 | Website |