Snowshoe is a new open-source project that's a cross-platform web-browser built atop the Qt5 tool-kit and relies upon WebKit2 for its rendering engine. However, its multiple user-interfaces is what distinguishes Snowshoe from many of the other open-source web-browsers.
Snowshow has multiple user-interfaces but the same core engine. The different UIs depend upon the mobile/desktop device where the Qt5/WebKit2 browser is deployed. These user-interfaces utilize Qt5's QML and there's special versions for desktops, mobile phones, tablets, and other devices.
The Snowshoe web-browser is licensed under the LGPL 2.1. More details on Snowshoe are available from OpenBossa.org