so did I, but when I interviewd techies this fall,, most who wanted me to move to the Wordpress blog, which I refuse, there was one who told me that I could use the software. I worry about it being free.
Most, if not all, open source is free. WordPress, Joomla, Drupal, PHP, MySQL, etc.
I take it you are running on a Linux server?
The software (framework) you need will depend on what your site does.