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HTTP based ad blocker for Mac OS X

No hacks, no instability
Upgrade Safari whenever you like, no need to wait for an upgraded hack

GlimmerBlocker is no longer maintained and should no longer be used as web sites have migrated from using plain http to using https (i.e. encrypted) which prohibits modification by a proxy unless you resort to install custom SSL certiticates on the client.

You should use a browser extension instead.

It was made as a hobby project during 2007-2008 by Peter Speck. It features both a custom http server and http client and a Mac OS X control panel.

GlimmerBlocker did not only block requests but also allowed for adding custom css and javascript to the pages. It also allowed for modification of the page html before the browser receives the html, which made some modifications much easier than DOM based modifications.

Release notes for version 1.1

Reorganized filters

Important bug fixes


New filter organization

The two standard filters have been reorganized into the following 4 filters:

This filter stop ads from e.g. doubleclick and other ad-agencies whose only purpose is to serve ads.
Site specific ads
This blocks ads on specific sites, typically by matching parts of the URL part (e.g. or a sub-domain (e.g.
Intrusive/fragile ad filtering
This filter is NOT enabled by default as it contains filtering which may easily break when sites changes design.
Site enhancements
This filter adds functionality to sites, e.g. a download button for movies. NOT enabled by default.

The above filters does not contain the iPhone/iPod optimizations previously found in the "Danish sites". An extra filter is available from with these optimizations.

Version 1.1 was released 2008-12-01. List of release notes.