14 open-source DNS Privacy & Filtering vendors
Open-source software for DNS Privacy & Filtering that you can self-host, with auditable source code — regardless of the developer's headquarters.
- vendors scored
- 14
- European
- 8
- foreign-owned
- 1
- last checked
- 11 October 2026
Vendors, scored
Score per vendor: 0 = high exposure, 100 = sovereign
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- Sovereignty score 94 out of 100AdGuard HomeCyprus · Self-hosted / open sourceOpen-source DNS server for blocking ads and tracking at network level
- Sovereignty score 94 out of 100BlockyGermany · Self-hosted / open sourceLightweight open-source DNS proxy and blocker written in Go
- Sovereignty score 94 out of 100dnscrypt-proxyFrance · Self-hosted / open sourceOpen-source DNS proxy with support for encrypted DNS protocols
- Sovereignty score 94 out of 100Freifunk München DNSGermany · EU sovereignFree, filter-free DNS resolver run by the German non-profit Freifunk München, hosted entirely within the EU (Munich and Vienna) with DoH/DoT/DoQ support.
- Sovereignty score 94 out of 100LibreDNSGreece · Self-hosted / open sourceGreek encrypted, GDPR-compliant DNS service from the non-profit LibreOps e.V., with zero logging.
- Sovereignty score 94 out of 100PortmasterAustria · Self-hosted / open source · owner in GibraltarOpen-source application firewall for Windows and Linux from Austrian company Safing, with DNS filtering of ads and trackers.
- Sovereignty score 94 out of 100UnboundNetherlands · Self-hosted / open sourceOpen-source validating, recursive and caching DNS resolver by NLnet Labs
- Sovereignty score 94 out of 100UncensoredDNS (Censurfridns)Denmark · EU sovereignIndividually-run, filter-free DNS resolver from Denmark offering anycast and unicast service since 2009, with no logging or censorship.
- Sovereignty score 79 out of 100Rethink DNSIndia · Self-hosted / open sourceIndian open-source DNS client and resolver service (Celzero Pvt Ltd) with firewall and VPN features.
- Sovereignty score 79 out of 100Technitium DNSIndia · Self-hosted / open sourceOpen-source DNS server with DNSSEC, DNS-over-HTTPS and ad blocking
- Sovereignty score 77 out of 100dnsmasqUnited Kingdom · Self-hosted / open sourceDnsmasq is a lightweight, self-hosted DNS forwarder/cache with an integrated DHCP server, actively maintained by Simon Kelley (UK), with a 2.93 release in 2026.
- Sovereignty score 77 out of 100SmartDNSChina · Self-hosted / open sourceSmartDNS is a self-hosted local DNS server that picks the fastest-responding IP among several upstream resolvers (DoT/DoH/DoQ), actively maintained with releases through 2026, originating from China.
- Sovereignty score 77 out of 100StubbyUnited Kingdom · Self-hosted / open sourceStubby is a self-hosted DNS Privacy stub resolver (DNS-over-TLS) from the getdns team/Sinodun IT (UK); development has slowed to low-maintenance mode since mid-2025 but the project is not abandoned.
- Sovereignty score 71 out of 100Pi-holeUnited States · Self-hosted / open sourceOpen-source network-wide ad and tracker blocking via DNS
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