NLnetLabs / unbound

Unbound is a validating, recursive, and caching DNS resolver.

semihalev / sdns

A high-performance, recursive DNS resolver server with DNSSEC support, focused on preserving privacy.

folbricht / routedns

DNS stub resolver, proxy and router with support for DoT, DoH, DoQ, and DTLS

hashcott / ghostline

One-click encrypted DNS (DoH/DoT/DoQ/DNSCrypt), protection against DPI interference with zapret2 (or GoodbyeDPI on Windows), a local HTTP/SOCKS proxy with TLS fragmentation, and domain rules for Windows and Linux. ~30 MB RAM, no telemetry, always restores your original DNS. For privacy, security research and education.