Qutebrowser
From Gentoo Wiki
qutebrowser is a web browser with vim-style key bindings based off the QtWebKit (or the QtWebEngine in its latest release). It is lightweight using a minimal GUI and is inspired by software such as Vimperator and dwb. It uses DuckDuckGo as the default search engine.
Qutebrowser was developed by Florian Bruhin, for which he received a CH Open Source award in 2016.
Installation
USE flags
USE flags for www-client/qutebrowser A keyboard-driven, vim-like browser based on PyQt5 and QtWebEngine
Turn off the bindist flag to enable support for proprietary codecs on webengine.
Emerge
root #emerge --ask www-client/qutebrowser