Unbound / NSD (NLnet Labs)
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Overview
Tagline Brand's website · 2026-10-04
A validating, recursive, caching DNS resolver built for speed, lean operation, and strict adherence to modern open standards, emphasizing user privacy and security through features like DNS-over-TLS/HTTPS, Query Name Minimisation, and DNSSEC validation, all delivered as free and open-source software.
Description Brand's website · 2026-10-04
Unbound is a validating, recursive, caching DNS resolver designed to be fast, lean, and incorporate modern features based on open standards. It focuses on increasing online privacy and security through support for DNS-over-TLS, DNS-over-HTTPS, Query Name Minimisation, and Aggressive Use of DNSSEC-Validated Cache. It is free, open-source software under the BSD license, widely available on Linux, BSD, and macOS.
Offerings
Core capabilities Brand's website · 2026-10-04
Unbound DNS Resolver
Pricing Brand's website · 2026-10-04
Free and open-source (BSD license), with optional paid support contracts for priority feedback and sponsored functionality.
Audience
Target industry Brand's website · 2026-10-04
System administrators, network engineers, privacy-conscious individuals and organizations, open-source enthusiasts, developers integrating DNS services.
Landscape
Competitors Brand's website · 2026-10-04
- BIND (ISC BIND)
- PowerDNS Recursor
- Knot Resolver
- dnsmasq
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Claim Unbound / NSD (NLnet Labs) — free →Page last updated 2026-10-04.