The Best AI uBlock Blacklist Alternatives in 2026

This curated blocklist identifies sites with AI-generated imagery for use with uBlock Origin or uBlacklist, including search-engine filtering.

Hide Nitro ads and other upsells in the Discord client with this ad-blocking project.

uBlock Origin is a content blocker for Chromium and Firefox browsers, described by its project as efficient, fast, and lean.

uBlock Origin Lite is the Manifest V3 version of the uBlock Origin project, with browser installation links listed on its project page.

The uAssets repository provides filter lists for uBlock Origin and uBlock Origin Lite, with its issue tracker hosted on GitHub.

For Firefox, Chameleon reduces fingerprinting signals using per-origin deterministic noise across browser fingerprinting surfaces.

AdGuard's Popup Blocker is a userscript that blocks unwanted pop-up and pop-under windows in browsers that support a userscript manager.

This curated host file lists domains serving ads, tracking scripts, and malware for blocking through a hosts file.

NeoDevHost publishes an ad-blocking hosts list, with repository topics indicating support for tools such as AdAway and Pi-hole.

Block hosts through DNS on Android with DNSNet, a DNS-based filtering app.

HaGeZi publishes DNS blocklists for filtering ads, trackers, malware, and other unwanted domains.

DNS Speed Test is a browser-based tool for measuring DNS over HTTPS server speeds and comparing results for a location.

Popup Blocker (strict) prevents popup windows in a browser extension and includes a history feature.

Pi-hole Tray is an unofficial Windows system tray app for monitoring and managing Pi-hole instances from the desktop.

This repository provides a setup guide for NextDNS, described as a DNS-over-HTTPS proxy with configuration options.

This privacy DNS project lists filtering for ads, ad tracking, and malware, alongside DNSSEC validation and several DNS protocols.

Technitium DNS Server is a DNS server project with source code and repository information hosted on GitHub.

Blacklists and whitelists built by open code, so you know what goes into them.

This arkenfox GitHub issue asks about Firefox's Enhanced Tracking Protection setting for suspected fingerprinting and its behavior.

The Locale Switcher extension for Chrome and Firefox changes browser language settings and Accept-Language headers, with per-tab controls.

The arkenfox user.js wiki discusses browser extensions and recommends keeping them to a minimum because they have privileged browser access.

SB.js brings SponsorBlock to a bookmarklet or userscript for restrictive environments, with loader and standalone usage options.

Scam Blocklist provides a HOSTS-format list of domains described as untrustworthy, with nightly updates that remove dead or invalid domains.

CastSponsorSkip is a Go program that uses the SponsorBlock API to skip sponsored YouTube segments and skippable ads on local Google Cast devices.