NSD — DNS server (Open Source)

NSD is an open-source DNS server solution from NLnet Labs. Compare it against 5 other DNS server tools on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is NSD?

NSD is open source — its source code is publicly available and free to use, modify and self-host, usually with an active community and no licensing fees. It is categorised under DNS server and published by NLnet Labs. Buyers typically evaluate NSD when they need a dependable DNS server option and want to weigh the trade-offs between free, open-source and paid tools before committing.

NSD alternatives

If NSD isn't the right fit, compare these DNS server alternatives side by side:

BindCoreDNSKnot DNSPowerDNSdnsmasq

Frequently asked questions

Is NSD free?
Yes. NSD is open source and free to use, with no purchase cost for the core product.
What are the best NSD alternatives?
Popular DNS server alternatives to NSD include Bind, CoreDNS, Knot DNS, PowerDNS. See the full list of DNS server on FreeSoftwareX.
What type of software is NSD?
NSD is an open-source DNS server tool developed by NLnet Labs.

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