/usr/bin/ps2sp
/usr/bin/qucsator
/usr/bin/qucsattenuator
/usr/bin/qucs
/usr/bin/qucsconv
/usr/bin/qucsdigi
/usr/bin/qucsedit
/usr/bin/qucsfilter
/usr/bin/qucshelp
/usr/bin/qucslib
/usr/bin/qucstrans
/usr/bin/qucsveri
You may install this package on CentOS with
yum
install qucs