[PHP] CMS for a Intranet

[WebMaster. Radio ECCA]

Hi! I´m developing a new intranet for my company and I wonder if there is any CMS 
package that fulfil my needs.
I´ve used PHP Nuke but I think it isn´t very safe.
I would need a package where creating new modules wew easy.
Which one would you recommend it?
Which one do you use?
Thanks in advance.