Dn-Famitracker is a fork of 0CC-FamiTracker that incorporates numerous fixes and features. The meaning of the name "Dn" is "Derivative n", which alludes to this fork being the nth derivative of the original FamiTracker program. Notable additions:

DPCM sample bit order reversal Multitrack per-channel export More accessible DPCM pitch preview More accessible VRC7 envelope editing Improved FDS, VRC7 and 2A03 emulation Restored Help manual, now under maintenance at Dn-help and more to come, see the release page for more info