| NTagLib | A namespace for all TagLib related classes and functions |
| NAPE | An implementation of APE metadata |
| NASF | An implementation of ASF (WMA) metadata |
| NDSDIFF | An implementation of DSDIFF metadata |
| NDIIN | |
| NDSF | An implementation of DSF metadata |
| NEBML | |
| NFLAC | An implementation of FLAC metadata |
| NID3v1 | An ID3v1 implementation |
| NID3v2 | An ID3v2 implementation |
| NSynchData | A few functions for ID3v2 synch safe integer conversion |
| NIT | An implementation of Impulse Tracker metadata |
| NMatroska | An implementation of Matroska metadata |
| NMod | An implementation of Protracker metadata |
| NMP4 | An implementation of MP4 (AAC, ALAC, ...) metadata |
| NMPC | An implementation of MPC metadata |
| NMPEG | An implementation of TagLib::File with MPEG (MP3) specific methods |
| NOgg | A namespace for the classes used by Ogg-based metadata files |
| NFLAC | An implementation of Ogg FLAC metadata |
| NOpus | A namespace containing classes for Opus metadata |
| NSpeex | A namespace containing classes for Speex metadata |
| NVorbis | A namespace containing classes for Vorbis metadata |
| NRIFF | An implementation of TagLib::File with RIFF specific methods |
| NAIFF | An implementation of AIFF metadata |
| NInfo | A RIFF INFO tag implementation |
| NWAV | An implementation of WAV metadata |
| NS3M | An implementation of ScreamTracker III metadata |
| NShorten | An implementation of Shorten metadata |
| NTrueAudio | An implementation of TrueAudio metadata |
| NWavPack | An implementation of WavPack metadata |
| NXM | An implementation of Extended Module metadata |
