Bertelli's Place - NetHack Patches
For version 3.4.x: Whips, Bard, Monk Flying Kick, and Wizard Staff.

Hearse
Windows utility to exchange bones files with other players.

Jukka's NetHack Modifications and Utilities
Reclist standalone utility and a collection of version 3.4.0 patches.

NetHack Additions
Heck^2 patch, Abigaba tileset, and a random horribly drawn cartoon.

nethack-el
Version 3.4.1 as an emacs major mode. News, screenshot, and source.

PatchHack
Mild variant collecting various authors' patches.

Stan's NetHack Page
Patches, utilities, and related links.

Unix Hearse
Utility to exchange bones files with other players for Linux and similar systems.

YHACS - You Hear A Clicking Sound
Sound theme for Windows. Requirements, installation directions, and sample files.