Open DNS is one of our regular recommendations for filtering.
The big question is how to find a new DNS and how to know it will be any better than your current one. This lightweight program will test your DNS against other popular DNS servers.
If your computer can't look up IP addresses quickly, it seriously slows down your browsing.
Fortunately, there are other DNS servers out there you can use.
Mac users should select the download link ending in "Mac_OS_X.dmg".