ngspice
on SourceForge
ng-spice-rework/old-releases/30/ngspice-30.pkg
ng-spice-rework/old-releases/30/ngspice-30-manual.pdf
ng-spice-rework/old-releases/30/ngspice-30_64.zip
ng-spice-rework/old-releases/30/ngspice-30_fftw_64.zip
ng-spice-rework/old-releases/30/ngspice-doc-30.tar.gz
ng-spice-rework/old-releases/30/ReleaseNotes.txt