Google is your friend my dude.. https://ourpact.com/ and https://adguard-dns.io/. Source: about 1 year ago

I think there are a few, usually working with a vpn. This one is oriented to families/groups: https://ourpact.com/. Source: over 1 year ago

There is a paid app called Our Pact that we used when my kids were younger. We don't use that anymore but did until they hit about 15 or so. It's really good; works on both android and ios. My kids have an Android phone (our old Samsungs) with limited data and unlimited calling/text. Source: about 2 years ago

Our pact. Paid service is better than the free one. Source: over 2 years ago

Perhaps something like the Linux Terminal Server Project? Source: over 1 year ago

I think you might want something like LTSP: https://ltsp.org/. Source: over 1 year ago

You can set up your machine to PXE boot and use something like LTSP to serve the OS. Configure without local storage, or optionally use the local storage only to cache the OS download from the server. Source: almost 2 years ago

Have you heard of https://ltsp.org/ ? Source: over 2 years ago

Check out https://ltsp.org/ for a start and browse their forums to see what they suggest for an authenticated web proxy. Source: over 2 years ago