linux hosting apps

> Hello,
>     Here is what I wanna do and hopefully one of you people 
> can help me.
> Most of our web hosting is centered around our Winblows based 
> e-commerce
> package and thus those sites are stuck with IIS.  However, we 
> do host a fair
> amount of generally static, non-commerce oriented sites. Now, 
> what I want to
> do is move them to a linux based server and offer them self 
> service tools
> that give them greater control of their account.  For 
> example.  I want to
> set up a tool called PHP webhosting that is similar to 
> geocities in that it
> has a nice web interface for managing site content.  Also, I 
> plan to run
> Qmail with qmailadmin on vpopmail and allow the owners of 
> these sites to
> administer their own e-mail.
>     MY QUESTION IS, is there other web hosting software out 
> there for linux
> that will allow me to add more value and self service to 
> those who host on
> our mighty linux web server?  I appreciate the time you took 
> to read this
> message and apologize if my question was not stated clearly.

> - Dr. Robert Jastrow
>         Founder of NASA"s Goddard Institute for space studies