On the standards track: Yes
Is Experimental: No
Is Deprecated: No
In Chrome version 49 on 2016-03-02
In Chrome Android version 49 on 2016-03-09
In Edge version 79 on 2020-01-15
In Firefox version 52 on 2017-03-07 Note: Before Firefox 63, rel="noopener" created windows with all features disabled by default. Starting with Firefox 63, these windows have the same features enabled by default as any other window.
In Firefox for Android version 52 on 2017-03-07 Note: Before Firefox for Android 63, rel="noopener" created windows with all features disabled by default. Starting with Firefox for Android 63, these windows have the same features enabled by default as any other window.
Not in Internet Explorer
In Quest Browser version 5.0 on undefined
In Opera version 36 on 2016-03-15
In Opera Android version 36 on 2016-03-31
In Safari version 10.1 on 2017-03-27
In Safari on iOS version 10.3 on 2017-03-27
In Samsung Internet version 5.0 on 2016-12-15
In WebView Android version 49 on 2016-03-09
In WebView on iOS version 10.3 on 2017-03-27