Kurupira Web Filter, free parental control software: block facebook, block facebook https, block twiiter, save your time, block improper websites, filter content and control the time spent on the web. Your safety in the digital jungle. Now with HTTPS site blocking, one of the best free web tools. An easy way to block websites and filter web content. The Kurupira Project aims to make a positive impact on the Internet and contribute to society through free software solutions.