GTK+ Themes
- bubble-gtk-theme - GTK themes based on Arc-themes
- mint-themes - Mint themes
- orchis-theme - A Material Design theme for GNOME/GTK+ based desktop environments
- space-gtk-theme - An elegant dark/light theme for GTK desktops
- squared-gtk-theme - Elegant dark GTK theme with squared corners
- sweet-gtk-theme - Light and dark colorful Gtk3.20+ theme