CSSTidy is an opensource CSS parser and optimiser. It is available as executeable file (available for Windows, Linux and OSX) which can be controlled per command line and as PHP script (both with almost the same functionality).
Plesk remove Qmail and Install Postfix
Switching the maildriver from qmail to Postfix using Autoinstaller fails on RHEL/CentOS – 6.4 with errors like the following:
#the autoinstaller: /usr/local/psa/admin/bin/autoinstaller