
The Microsoft Edge browser (new in Windows 10) does not support Java. The HTML5 implementation of Jmol, JSmol, works just fine in Firefox. Until sometime in 2018, there was a special version of Firefox called Extended Support Release (ESR) that supported Java however, later ESR versions no longer support Java. That change happened in March 2017 and had been announced well in advance. The Mozilla Firefox browser does not support Java (including the Java-dependent version of Jmol) since version 52 of the 32-bit browser the 64-bit Firefox has never supported Java. The HTML5 implementation of Jmol, JSmol, works just fine in Chrome. This change happened in late 2015 and had been announced well in advance. The Google Chrome browser does not support Java (including the Java-dependent version of Jmol). Official browser compatibility documentation for Java. Java Applets do not work in Chrome, Firefox, Edge, or Opera

Firefox itself still outperforms it in several areas. Waterfox can be downloaded on most platforms: Windows, Linux, macOS, and even Android on the Google Play Store. Perhaps, with more collaborators, it could live up to its potential, since it is still accessible for the casual user. However, this sort of thing doesn’t excuse its flaws. There is a reason for that very few people work on Waterfox. It's not any more powerful, nor ethical, than Firefox. Waterfox’s worst flaws include its underwhelming HTML5 support when compared to Firefox. In the browser’s subreddit, which the site links to instead of a support page, several big issues can be found by critical users. You might say that this program isn’t as powerful as other alternatives. So, in that regard, all that differentiates one “fox” browser from another is that Waterfox has several privacy options turned off by default while Firefox has them on.


However, Firefox already has the option to disable sending data. When talking “ethics”, it means that no data is sent to the Waterfox project or to Mozilla, which does sound like an important step forward. Waterfox tells you upfront that it wants to be an ethical and powerful browser however, it doesn’t do so. The consensus seems to be that Waterfox has infrequent updates, and is not yet the powerful browser it says it is.
