ufdbGuard - URL filter for the Squid web proxy
Blur - Blur is a software application available for both Google Chrome and your smartphone. It's developed by Abine, an online privacy company trusted by more than twenty million people. Read more about Blur.
E2Guardian - Web filtering solution
NaaS - Nudity-detection as a service run on solar powered Rasp Pi's
Diladele Web Safety - Diladele Web Safety is the name of a simple, easy to use and powerful web filter for all kind of activities over the internet.
DataMask.tech - Mask private data before taking screenshots