Polipo - A small and fast caching web proxy (a web cache, an HTTP proxy, a proxy server).
AdGuard DNS - Soon you'll be able to create your own private DNS server that will protect your personal data, block ads and trackers, and allow you to control access to specific Internet content.
Artica Proxy - Artica Proxy is an appliance that claim to manage Squid-cache proxy with all features that Squid...
NextDNS - Block ads, trackers and malicious websites on all your devices.
Privoxy - Privoxy helps users to protect their privacy.
Quad9 - Quad9 is a free, recursive, anycast DNS platform that provides end users robust security protections, high-performance, and privacy.