mSec
Developers and administrators dedicated to forwarding the MacOS as a viable and secure network server environment.

Freaks Macintosh Archives
Largest Macintosh (Hackintosh) security and hacking related site for the MacOS.

PRG MacOS Tools & Utilities
Collection of security evaluation tools commonly used by hackers.

Team2600
Team2600 is the oldest Macintosh-only underground group now defunct and unmaintained.

Mac Hackers
Macintosh Hacking forums from Mac OS X security, development to system modifications.

AccessCard
Links to Macintosh underground sites.

The Underground Mac
Downloadable files, forum and news with development team.

Nexus 9
Development group featuring releases, articles, and members information.

Team Handicap
Underground Macintosh development team with forums, open source and links.

CowFight
Team of Macintosh underground developers, creators of ZapAttack, MacSmurf, SYNer and Cyanide.

Digital Calamity
Development team creating hacking and security applications for the Macintosh.

MacFilez.net
Homepage for Mancow, vetern of the Macintosh file community.

Team Blank
Team of Macintosh developers coding for the underground community.

WDSecurity
Homepage of WeeDo, developer of GrouchySmurf and StreamEdit.

TUW
Fever's updated list of underground links.

Nessno
File server information, downloads and links for the Macintosh.

IsraHack
Features articles, links and programs by IsraHack of Nexus9

Thee Gran Dive X
Commentary, links and reviews with an underground perspective.