Best Open Source Ad Filter Compatible Extension

Modern ad blocking runs on community-maintained filter lists, and Ultimate Adblocker is built on them: EasyList and the Adblock Warning Removal List for ads, EasyPrivacy for trackers, the EasyList Cookie List and Fanboy's lists for cookie banners, pop-ups and social widgets, and the URLhaus, Phishing URL Blocklist and NoCoin lists for malware, phishing and crypto miners. It converts them into Chrome's Manifest V3 rule format and runs the lists' hiding rules and site fixes with its own code, and its Credits page names every list and its licence. The lists ship inside the extension, so new versions arrive with extension updates; you can't add custom lists of your own.