CutX 2.0
Updated: 22.03.05
License: $19, with prices for higher volumes
URL: CutX 2.0
Requires: 10.3+, Safari 1.1+
An Input Manager extension, that helps block adverts and unsuitable content.
Updated: 22.03.05
License: $19, with prices for higher volumes
URL: CutX 2.0
Requires: 10.3+, Safari 1.1+
An Input Manager extension, that helps block adverts and unsuitable content.
Updated: 12.11.04
License: Freeware
URL: Floppymoose
Requires: 10.2+ Safari 1.0+
Free ad-blocking capabilities with css
Updated: 20.11.08
License: Free
URL: GlimmerBlocker 1.0.1b
Requires: OS X 10.5+

GlimmerBlocker offers a powerful ad-blocking plugin for Safari that avoids this method of enhancement. Instead, it is implemented as a simple http proxy. A robust set of built-in filters are included, and custom filters can be added via the control panel that is installed in the System Preferences.
Updated: 20.06.06
License: Shareware - $10
URL: Pith Helmet 2.6.6
Requires: 10.4+ Safari 2.0+ (older versions available for Panther)
Very powerful ad blocking plugin, with the ability to set rules for adverts, animations and scripts per-site.
Updated: 25.05.08
License: Freeware
URL: Safari AdBlock 0.3.2
Requires: Safari 3.0+, 10.5+
Safari AdBlock is perhaps the best ad-blocking solution for Safari. It is free of charge and licensed under the GPL. Safari AdBlock is meant to be extremely simple to use: there is nothing to configure, no filter list to manage, and no regular expressions to write.
Updated: 09.07.07
License: Freeware
URL: SafariBlock 1.2
Requires: 10.3+, Safari 1.3+
SafariBlock is designed to be an imitation of Firefox’s AdBlock extension. Adverts or frames are blocked via a context menu. While not as fully featured as PithHelmet, users may find this approach easier to configure.
Updated: 24.05.06
License: Freeware
URL: SafariPlus 1.5
Requires: 10.3+, Safari 1.3+
SafariPlus adds a preference menu item to the Safari application menu, allowing you to control a whitelist of cookie domains.
SafariPlus in an InputManager extension. It adds a preference menu item to the Safari application menu, allowing you to control a whitelist of cookie domains.h4. Changes in 1.5