Any suggestions for internet monitoring software?

[Misia]

I have a few pre-teen and teenage kids that always visit my house and are on my computer. Any recommendations on software that I can use on my Mac to monitor their usage? I searched keylogger for mac on google and got some like Amac Keylogger (http://www.amackeylogger.com). It seems that this keylogger is very popular online, but I know nothing about it. Have any more informative suggestions for me?
Thx a lot.

[anta]

I have a few pre-teen and teenage kids that always visit my house and are on my computer. Any recommendations on software that I can use on my Mac to monitor their usage? I searched keylogger for mac on google and got some like Amac Keylogger (http://www.amackeylogger.com). It seems that this keylogger is very popular online, but I know nothing about it. Have any more informative suggestions for me?
Thx a lot.
My auntie used the keylogger (http://www.microkeylogger.com) to monitor my cousin's activity on the computer, and we could't delete the keylogger without her password. This problem has disturbed us for a long time. And we googled it, it seemed that some spy software like remote spy (http://www.remote-pc-spy.com) is invisible and undetectable. Since you want to install it on your own computer for your own need, I think it is useful.

[Kelly_H]

I and my husband use Entelechy PC Monitoring (http://www.safe-monitoring.com) for PC. It is invisible, records all activities on the computer and Internet. We recommend it, you can ask if they have available for Mac.

[Lolla555]

I’ve only used Praetorian Guard (http://www.praetorianguard.net) on my Windows 7 computers, I’m not sure if they have for Mac as well. Praetorian Guard shows the time spent on each program, application and website. The screenshot features allow me to see the desktop activity every second if I need it to. I find it very useful and handy for my business. Maybe it can help you too.