GlimmerBlocker is no longer maintained and should no longer be used as web sites have migrated from using plain http to using https (i.e. encrypted) which prohibits modification by a proxy unless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.
Updated Developer Certificate to avoid warning when installing. Reported by a contributor.
Fixed problem when installing (extraction of tar files). Reported by Reinier de Lange.
Upgraded jvm runtime.
Added more debug logging.
Version 1.5.3 was released 2013-07-16
Release notes for 1.5.2, 1.5.1, 1.5 and list of all release notes.