Java Plug-in 1.8.0 - /usr/lib/jvm/java-8-oracle/jre/lib/amd64/libnpjp2.so
IcedTea-Web Plugin (using IcedTea-Web 1.2 (1.2-2ubuntu1.3)) - /usr/lib/jvm/java-6-openjdk-amd64/jre/lib/amd64/IcedTeaPlugin.so (icedtea-6-plugin)
Shockwave Flash - /usr/lib/adobe-flashplugin/libflashplayer.so (adobe-flashplugin)
QuickTime Plug-in 7.6.6 - /usr/lib/mozilla/plugins/libtotem-narrowspace-plugin.so (totem-mozilla)
DivX® Web Player - /usr/lib/mozilla/plugins/libtotem-mully-plugin.so (totem-mozilla)
VLC Multimedia Plugin (compatible Totem 3.0.1) - /usr/lib/mozilla/plugins/libtotem-cone-plugin.so (totem-mozilla)
Windows Media Player Plug-in 10 (compatible; Totem) - /usr/lib/mozilla/plugins/libtotem-gmp-plugin.so (totem-mozilla)
LibreOffice Plug-in - /usr/lib/libreoffice/program/libnpsoplugin.so (mozilla-libreoffice)
Gnome Shell Integration - /usr/lib/mozilla/plugins/libgnome-shell-browser-plugin.so (gnome-shell)
DjView-4.9 - /usr/lib/mozilla/plugins/nsdejavu.so (djview-plugin)
VLC Web Plugin - /usr/lib/mozilla/plugins/libvlcplugin.so (browser-plugin-vlc)
MozPlugger 1.14.3 handles QuickTime and Windows Media Player Plugin - /usr/lib/mozilla/plugins/mozplugger.so (mozplugger)
QuickTime Plug-in 7.6.9 - /usr/lib/mozilla/plugins/gecko-mediaplayer-qt.so (gecko-mediaplayer)
Windows Media Player Plug-in - /usr/lib/mozilla/plugins/gecko-mediaplayer-wmp.so (gecko-mediaplayer)
DivX Browser Plug-In - /usr/lib/mozilla/plugins/gecko-mediaplayer-dvx.so (gecko-mediaplayer)
mplayerplug-in is now gecko-mediaplayer 1.0.4 - /usr/lib/mozilla/plugins/gecko-mediaplayer.so (gecko-mediaplayer)
RealPlayer 9 - /usr/lib/mozilla/plugins/gecko-mediaplayer-rm.so (gecko-mediaplayer)