During installation, it will ask to install a safety toolbar and changing your default search provider. K9 Web Protection is a free Internet filter and parental control software for your home Windows or Mac computer. Disabling or uninstalling the program will require a valid password. Trust the enhanced anti-tamperingeven children can't break. Comes with a key logger that'll help parents keep a track of what their children are looking for when online Pros: The first few search results will be sites presented in particularly kid-friendly language, while lower results will still be OK content-wise, but may be too technical for young children. Qustodio is the free porn blocker for you if you prefer to safeguard your children from porn at any cost.
Family Safety from Microsoft is a comprehensive free porn blocker that you can go with.
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K9 is no longer offered for sale, but the free version is still available. Qustodio uses specialized technology that many other internet filters don't use. Trust the enhanced anti-tamperingeven children can't break. Spyrix Free Keylogger is another useful parental control tool that can help if you think your kids might have got themselves into trouble online. Block Pornography Now Qustodio is free parental control software that blocks pornography and makes computers safe for kids to use.