Internet Download Manager supports all these browsers. Please note that you may need to enable "Use advanced browser integration" option in order to use IDM with Mozilla or Opera browsers. If it doesn’t help, please check that NPIDMan1.dll and NPIDMan2.dll files exist in “\Plugins” subfolder ("Program\Plugins\" for Opera) of Mozilla root folder. If these files do not exist, please download them from the links above and place them to the browser Plugins folder. Make sure that corresponding "Integrate IDM into browsers" box is checked for your browser in IDM Options->General. For older versions of Opera browser, you may need to select preferences in "Opera->File->Preferences->Multimedia->Find_plug-ins..."
