Estos son algunos complementos que me han resultado utiles.
- PDF Download: PDF Download relieves the pain experienced when encountering PDF files
on the Web. Whenever you click on a PDF file, PDF Download lets you
know before trying to open it, and then offers you choices such as
downloading, opening, or converting it straight to HTML - Video download helper: ayuda a bajar archivos de YouTube
- DownThemAll: adminstrador de descargas
- FireFTP: cliente de FTP
Enjoy it!