The GUI bundle is known simply as WebContentControl. As you can see from the following screenshots, WebContentControl provides a concerned parent with a multitude of tools to take control of an individual computer's web content usage.
Now here is where WebContentControl separates itself from router/web-based filtering solutions: WebContentControl uses its own settings and configuration locally.
This means its sticking with the computer and the temptation to merely connect to another network is not going to allow a child to view questionable content.
Then there are the available features.
For someone not interested in using something to filter web content hosted remotely, this is a fantastic option. Sort of like a NetNanny for Linux users.
And considering it was created to tide Ubuntu users over until a permanent solution known mysteriously as gChildCare is built and distributed, it is sure a lot better than nothing at all.
Lack of clear commercial options in this space
Even when taking everything that I have highlighted above into consideration, there are still going to be those concerned about the obvious lack of commercial options. To these individuals, I would point out the following.
So one might as well ask the question: does desktop Linux distros such as Ubuntu provide worthwhile parental controls that are easy enough for most people to use? Considering my experience in evaluating the options available, I would have to say yes. There is no question that the options above address the needs of most people out there looking to gain better parental control over the Linux PCs being used by their kids.
Put simply, these solutions work. All that is left for those wanting to take more control over their Linux boxes for the benefit of their kids is to utilize the tools I have presented here today.