Network & Internet Management

Hi All, I need to be able to control and manage our network and internet. We are looking for a software/hardware but we prefer software that can manage our internet bandwidth, chat messaging, website filtering and p2p also that can filter specific machines and generates reports every day/week/month. Can anyone recommend a software that does not require monthly payments. I have squid installed on our xserve but we feel that it just not the software that can meet our needs.