Programming language: C
License: BSD 3-clause "New" or "Revised" License
Tags: DNS    

Unbound alternatives and similar tools

Based on the "DNS" category.
Alternatively, view Unbound alternatives based on common mentions on social networks and blogs.

  • PowerDNS

    PowerDNS Authoritative, PowerDNS Recursor, dnsdist
  • Bind

    Mirror of https://gitlab.isc.org/isc-projects/bind9, please submit issues and PR/MRs in the GitLab. Any issues and PRs opened here will be closed without a comment.
  • Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
    Promo www.influxdata.com
    InfluxDB Logo
  • NSD

    The NLnet Labs Name Server Daemon (NSD) is an authoritative, RFC compliant DNS nameserver.
  • Knot DNS Resolver

    Knot Resolver - resolve DNS names like it's 2024
  • Knot DNS

    A mirrored repository
  • Designate

    OpenStack Technical Committee Decisions. Mirror of code maintained at opendev.org.
  • Yadifa

    YADIFA is a lightweight authoritative Name Server with DNSSEC capabilities. Developed by the passionate people behind the .eu top-level domain, YADIFA has been built from scratch to face today’s DNS challenges, with no compromise on security, speed and stability, to offer a better and safer Internet experience.
  • dnsmasq

    DISCONTINUED. mirror of dnsmasq (git://thekelleys.org.uk/dnsmasq.git ). This account is NOT maintained by dnsmasq developers. I am happy to give account to them. Please feel free to contact me. 1584171677[at]qq[dot]com
  • djbdns

    A collection of DNS applications, including tinydns.
  • CoreDNS

    Flexible DNS server written on Go.

Do you think we are missing an alternative of Unbound or a related project?

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Travis Build Status Packaging status Fuzzing Status Documentation Status

Unbound is a validating, recursive, caching DNS resolver. It is designed to be fast and lean and incorporates modern features based on open standards. If you have any feedback, we would love to hear from you. Don’t hesitate to create an issue on Github or post a message on the Unbound mailing list. You can learn more about Unbound by reading our documentation.


Make sure you have the C toolchain, OpenSSL and its include files, and libexpat installed. Unbound can be compiled and installed using:

./configure && make && make install

You can use libevent if you want. libevent is useful when using many (10000) outgoing ports. By default max 256 ports are opened at the same time and the builtin alternative is equally capable and a little faster.

Use the --with-libevent=dir configure option to compile Unbound with libevent support.

Unbound configuration

All of Unbound's configuration options are described in the man pages, which will be installed and are available on the Unbound documentation page.

An example configuration file is located in doc/example.conf.