GlimmerBlocker Logo


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GlimmerBlocker is no longer maintained and should no longer be used as web sites have migrated from using plain http to using https (i.e. encrypted) which prohibits modification by a proxy unless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.

Bug fixes and better compability

Workaround for invalid http response headers sent from some of the Akamai servers which Apple uses for their site. This made the Apple site hang for some requests. Reported by Daniel Greve Rose

Opening the System Preferences Panel is now faster when you have filters with a huge number of rules.

Accept "200 OK" in addition to "204 No content" and "201 Created" when publishing an filter using WebDav?. Reported by Cornelius Wilkening.

Does't add the keyword filter by default as Safari 5 doesn't work well with keywords due to address-bar history search.

"application/javascript" is added to the mime-types which is considered javascripts (had application/x-javascript and text/javascript and text/ecmascript)

Release date

Version 1.4.7 was released 2010-07-26.

Release notes for 1.4.5, 1.4.4, 1.4.2, 1.4.1, for 1.4 and list of all release notes.