Not natively. However, the "Web Team" version works via Wine (Mac) or CrossOver. For Linux, use the browser plugin inside Chromium (via the User-Agent switcher).
To download the best Easy Viewer version, I recommend checking the official NaCl Web team website or GitHub repository for the most up-to-date and stable releases. You can search for "NaCl Web team Easy Viewer download" or "Native Client Easy Viewer" to find relevant links. nacl web team easy viewer download best