Name: gtk-youtube-viewer
Homepage: https://github.com/trizen/youtube-viewer
Open Source: yes
Source: https://github.com/trizen/youtube-viewer/archive/3.1.4.tar.gz
Description: "A Gtk2 application for searching and streaming videos from YouTube".
(In case someone points out that smtube is available for Solus: that's just a wrapper for a poorly designed website; it's not comparable to gtk-youtube-viewer and its functionalities).