What is uBlacklist used for?

uBlacklist is a browser extension that blocks sites you choose from appearing in Google and other search results, with pattern and regex rules, sync and shareable rulesets. It is a good fit for removing content farms from search results, sharing blocklists across devices, and cleaner research and shopping searches.

Is uBlacklist open source?

Yes. uBlacklist is open source under the MIT licence. Its source code is on GitHub at iorate/ublacklist and is written mainly in TypeScript.

Yes. uBlacklist is open source, so the software itself is free to use.

Can I self-host uBlacklist?

Yes. uBlacklist can be self-hosted on your own server or infrastructure.

What are some alternatives to uBlacklist?

Similar open-source tools in the Search category include SearchJumper, SearXNG and Degoog. SaaS products in the same category include Ecosia, Amazon OpenSearch Service and Azure AI Search.

Is uBlacklist actively maintained?

Yes. The most recent commit to uBlacklist was on 1 October 2026, and the latest release is v10.1.1, published on 19 September 2026. The project has 6.7k stars on GitHub.

uBlacklist: open-source search

About uBlacklist

uBlacklist is a browser extension that keeps sites you specify out of search results. It works on Google and also on Bing, Brave, DuckDuckGo and other search engines, across web, image, video and news results, and rules can be added on search pages or from the toolbar icon while visiting a site.

Rules can be match patterns, such as a URL wildcard, or expressions that include regular expressions, variables and string matchers, so you can filter by domain, path, title or category. Rulesets can be synchronized across devices through Google Drive, Dropbox, OneDrive, WebDAV or browser sync, and you can subscribe to public rulesets that the community lists on its website.

uBlacklist is available for Chrome, Firefox, Edge and Safari on macOS and iOS, with a stated policy of supporting the latest stable versions. It is written in TypeScript and licensed under MIT. It suits people who want to cut out low-quality, spammy or irrelevant sites from their searches.

Key features

Blocks chosen sites in search results
Match patterns and regular expression rules
Rule sync via cloud storage or browser sync
Subscriptions to public rulesets
Works with Google, Bing, Brave and DuckDuckGo
Chrome, Firefox, Edge and Safari support

Good fit for

→Removing content farms from search results
→Sharing blocklists across devices
→Cleaner research and shopping searches

Built with: TypeScript
Tags: browser-extension; search; blocklist; google-search; privacy; chrome-extension; firefox-addon; typescript

uBlacklist: questions and answers

What is uBlacklist used for?: uBlacklist is a browser extension that blocks sites you choose from appearing in Google and other search results, with pattern and regex rules, sync and shareable rulesets. It is a good fit for removing content farms from search results, sharing blocklists across devices, and cleaner research and shopping searches.
Is uBlacklist open source?: Yes. uBlacklist is open source under the MIT licence. Its source code is on GitHub at iorate/ublacklist and is written mainly in TypeScript.
Is uBlacklist free?: Yes. uBlacklist is open source, so the software itself is free to use.
Can I self-host uBlacklist?: Yes. uBlacklist can be self-hosted on your own server or infrastructure.
What are some alternatives to uBlacklist?: Similar open-source tools in the Search category include SearchJumper, SearXNG and Degoog. SaaS products in the same category include Ecosia, Amazon OpenSearch Service and Azure AI Search.
Is uBlacklist actively maintained?: Yes. The most recent commit to uBlacklist was on 1 October 2026, and the latest release is v10.1.1, published on 19 September 2026. The project has 6.7k stars on GitHub.