If you use built-in download manager of Firefox to download files from websites instead of external download managers like IDM, FDM and others, then FirefoxDownloadsView tool might be helpful for you. FirefoxDownloadsView displays list of latest files you downloaded with Firefox.
With FirefoxDownloadsView, you can track the latest downloaded files details such as download URL, Download File name (with full path), Referrer, MIME type, File Size, Start/End Time, Download duration, and Average Download Speed.
You can select one or more downloads entries and then save the list into XML/HTML/Text/CSV file or copy the downloads information to the clipboard and paste it into Excel or other spreadsheet application.
FirefoxDownloadsView is freeware and portable, works with Firefox 3.x and Firefox 4 Beta .