All of the screensavers that we list on this site are free and/or freeware. You can download and use them completely free, forever.
Because each screensaver appears in only one category, you may have to try more than one category to find the screensaver you are looking for. For example, you will find military aeroplanes in the aircraft section, and also in the military section.
Note that the older screensavers may not work if you are using the Windows 'Vista' Operating System.