Thank you for posting this in Microsoft Q&A.
I understand that you are looking for alternative solutions for web protection on Google Chrome and Firefox.
Web content filtering is available on major web browsers, with blocks performed by Windows Defender SmartScreen on Microsoft Edge and network protection on Chrome, Firefox, Brave, and Opera. You can use network protection for Chrome and Firefox, which helps protect devices from certain Internet-based events by preventing connections to malicious or suspicious sites. It expands the scope of Microsoft Defender SmartScreen to block all outbound HTTP(S) traffic that attempts to connect to low-reputation sources based on the domain or hostname
For more information: https://learn.microsoft.com/en-us/defender-endpoint/network-protection
https://learn.microsoft.com/en-us/defender-endpoint/web-threat-protection
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Navya.
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