| AccessCard: Links to Macintosh underground sites. |
| CowFight: Team of Macintosh underground developers, creators of ZapAttack, MacSmurf, SYNer and Cyanide. |
| Mac Hackers: Macintosh Hacking forums from Mac OS X security, development to system modifications. |
| mSec: Developers and administrators dedicated to forwarding the MacOS as a viable and secure network server environment. |
| Nessno: File server information, downloads and links for the Macintosh. |
| Team2600: Team2600 is the oldest Macintosh-only underground group now defunct and unmaintained. |
| Thee Gran Dive X: Commentary, links and reviews with an underground perspective. |
| TUW: Fever's updated list of underground links. |
| WDSecurity: Homepage of WeeDo, developer of GrouchySmurf and StreamEdit. |