$ apt-cache search gtkmozembed
libgecko2.0-cil - CLI binding for the GtkMozEmbed library, unstable version
libgtk-mozembed-ruby - ruby binding of GtkMozEmbed, gecko renderer
libxul-common - Gecko engine library - common files
libxul-dev - Development files for the Gecko engine library
libxul0d - Gecko engine library
libxul0d-dbg - Development files for the Gecko engine library