Timekpr is a parental control application that can be used to track and control the computer usage. Using it, you can limit an user's login time duration and access hours or lock accounts with a click.

The Timekpr development stopped a while back, but it was later continued with a fork, called Timekpr-Revived, which works with recent Ubuntu versions.

Gnome Nanny is an easy way to control what your kids are doing in the computer, under Linux. You can limit how much time a day each one of them is browsing the web, chatting or doing email. You can also decide at which times of the day the can do this things. Gnome Nanny filters what web pages are seen by each user, so you can block all undesirable webs and have your kids enjoy the internet with ease of mind, no more worries!

Using Gnome Nanny (Parental Control), you can control which websites you children can and can't access and for how long for each day of the week they can access the computer, the web, email or an instant messaging client.

Installing the latest Gnome Nanny version in Ubuntu Linux is very easy, as there is a Launchpad PPA available. To add the PPA, simply paste the following command(s) in a terminal: