Qustodio - Free parental control software. Monitor and track your child's online activity. Block dangerous sites and protect kids from online bullying.
Surge for Mac - Advanced Web Debugging Proxy for Mac & iOS
HomeGuard Activity Monitor - Monitor and block Web activity, keystrokes, limit gaming time and record screenshots.
Weer - A HTTP protocol debugger with Chrome DevTools frontend interface
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.
Cellist - Cellist is an all-in-one HTTP debugging proxy software designed for OS that provides a straightforward approach to put a proxy between the HTTP client and the internet.