See the earlier Phoronix article if you didn't already and are interested in an Opera-like Qt5 web-browsing solution. The browser is still early in development but there's hopes for a beta release around March.
Among the features still being developed to put it on feature par to other browsers include a start page, proxy support, page-specific preferences, and a passwords manager. There's also TODO items like spell checking, content blocking, UI refinements, mouse gestures support, and much more.
Those interested in giving Otter Alpha 1 a try can visit Otter-Browser.org. The code is available via GitHub while there's precompiled binaries for 32-bit Windows and i386/AMD64 Debian/Ubuntu packages.