FireFox: https://addons.mozilla.org/en-US/firefox/addon/ublock-origin...
Chrome: https://chromewebstore.google.com/detail/cjpalhdlnbpafiamejd...
And a "lite" version that works with Chrome's Manifest V3. https://chromewebstore.google.com/detail/ublock-origin-lite/...
Chrome will start phasing out Manifest V2 in June of this year: https://developer.chrome.com/blog/resuming-the-transition-to...
Also supported on Brave and Opera: https://en.wikipedia.org/wiki/UBlock_Origin#Currently_suppor...