[Commits to master since this release](https://github.com/gorhill/uBlock/compare/%version%...master) To install the developer build: - **Firefox**: Click [uBlock0_%version%.firefox.signed.xpi](https://github.com/gorhill/uBlock/releases/download/%version%/uBlock0_%version%.firefox.signed.xpi) - [uBO works best on Firefox](https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox). - **Chromium**: Install from the Chrome Web Store (CWS): . - **Thunderbird**: Download [uBlock0_%version%.thunderbird.xpi](https://github.com/gorhill/uBlock/releases/download/%version%/uBlock0_%version%.thunderbird.xpi), then drag-n-drop it into Thunderbird's _Add-ons Manager_ pane (Thunderbird 91+ required) - **Node.js**: Import from [npm](https://www.npmjs.com/package/@gorhill/ubo-core), or download and unzip [uBlock0_%version%.npm.tgz](https://github.com/gorhill/uBlock/releases/download/%version%/uBlock0_%version%.npm.tgz).