ftp.ntua.gr:/mirror/slackware/slackware64-14.1/source/l/fftw/?C=S&O=A 
Icon  Name                                             Last modified      Size  Description
[DIR] Parent Directory                                                      -   
[TXT] slack-desc                                       22-Jul-2012 20:01  959   
[TXT] fftw.SlackBuild                                  23-Mar-2013 01:18  3.5K  
[   ] fftw-3.3.3.tar.xz                                25-Nov-2012 18:54  2.2M
Apache/2.2 Server at ftp.grnet.gr Port 80