UBlock Origin

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uBlock Origin (uBO)

A wide-spectrum blocker. Easy on CPU and memory.

µBlock Origin (µBO, pronounced micro-block origin) is a wide-spectrum blocker for browsers with a simple point-and-click interface to allow users to filter and block server requests, domains, scripts, and more. By default it blocks ads, trackers and malware sites.

Users should note that uBlock Origin and uBlock, while they have some history, are now distinct programs whose code base has diverged form each other for some time, with uBlock Origin being the more actively developed and better maintained of the two.


"uBlock" is prefered search term for most users which won't find "µBlock" (note the µ). Therefore we use "uBlock Origin" in the Name field.

The Debian package is: ublock-origin

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Extension or Plugin

This package can be used as an extension, plugin, or add-on to:

Extensions, plug-ins, or add-ons for this program

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Verified by

David Hedlund

Verified on

20 October 2015


https://github.com/gorhill/uBlock/blob/master/LICENSE.txt Addendum: "Some of the 3rd-party filters (simple data files) in this software are under non-free licenses. However, it is not clear that the works in question are actually subject to copyright or that the licensing terms could apply. As such, we urge you to use redistribute those filters with caution that someone may try to claim copyright on the works." - Joshua Gay, Licensing & Compliance Manager, Free Software Foundation - https://github.com/gorhill/uBlock/wiki/Filter-list-licenses

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This entry (in part or in whole) was last reviewed on 2 September 2017.


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