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uBlock Origin (uBO) is **NOT** an "ad blocker"; it is a wide-spectrum content blocker with CPU and memory efficiency as primary features.
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***
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Out of the box, uBO blocks ads, trackers, coin miners, popups, etc. through the following lists of filters, enabled by default:
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- EasyList (ads)
- EasyPrivacy (tracking)
- Peter Lowe’ s Ad and tracking server list
- Online Malicious URL Blocklist
- uBO owned lists
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More lists are available for you to select if you wish:
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- EasyList Cookie List
- Fanboy's Annoyance List
- AdGuard Annoyances
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- Dan Pollock’ s hosts file
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- And many others
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Additionally, you can point-and-click to block JavaScript locally or globally, create your own global or local rules to override entries from filter lists, and many more advanced features.
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Free.
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Open source with public license (GPLv3).
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For users by users.
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If you ever want to contribute something, think about the people working hard to maintain the filter lists you are using, which were made available to use by all for free.
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***
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[Documentation](https://github.com/gorhill/uBlock#ublock-origin)
[Release Notes](https://github.com/gorhill/uBlock/releases)
[Community Support on Reddit](https://www.reddit.com/r/uBlockOrigin/)
[Contributors on GitHub](https://github.com/gorhill/uBlock/graphs/contributors)
[Contributors on Crowdin](https://crowdin.com/project/ublock)