CurrentWare BrowseControl - BrowseControl web filtering software blocks websites based on URLs and categories. Policies can be customized for each user, department, or OU. Includes other features such as an app blocker, port filter, and download/upload blocker.
Qustodio - Free parental control software. Monitor and track your child's online activity. Block dangerous sites and protect kids from online bullying.
HomeGuard Activity Monitor - Monitor and block Web activity, keystrokes, limit gaming time and record screenshots.
Anti-Porn - Anti-Porn is a porn blocker application that lets the parents arrange safe and secure internet for their child.
MobileFence - Parental controls for Android devices.
K9 Web Protection - This also contains the feature “Blacklist Without Password” which allows non-admin users to add sites to the “Always Block” list without requiring the K9 admin password.