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GlimmerBlocker is no longer maintained and should no longer be used as web sites have migrated from using plain http to using https (i.e. encrypted) which prohibits modification by a proxy unless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

Reduced memory usage

GlimmerBlocker now uses less memory when using Snow Leopard (10.6) on 64-bit capable hardware

Fix hang when opening the Sys Prefs Panel

Use short http timeout when testing if the java server is running or not, as the standard 60 sec timeout (times 3 tries) will hang the Sys Prefs Panel for a looong time. Reported by Tom Gregory.

Release date

Version 1.4.2 was released 2009-10-06.

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