Was it really HTML+JS? Because it was fast, many years back (used it just as an RSS reader though). Also, they shipped it as a standalone product[1], but I don&#x27;t think it ever got updated after that.<p>1. <a href="http:&#x2F;&#x2F;www.opera.com&#x2F;computer&#x2F;mail" rel="nofollow">http:&#x2F;&#x2F;www.opera.com&#x2F;computer&#x2F;mail</a>