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rldns is an open source lightweight DNS server for linux & bsd (x64)
rldns is an open-source, lightweight DNS server designed for Linux, NetBSD, FreeBSD, and OpenBSD. It supports both x86 and x86_64 architectures. Developed by Antonius (w1sdom) from bluedragonsec.com
Latest Update: Version 1.3 (Released February 2026). This release includes core performance optimizations and enhanced query handling.
Multiple services fork of original multi-platform inadyn, and inadyn-advanced projects. Supports many update services, easily extendable for others including additional servers config file, custom response codes, custom parameter names, and custom update server type. Highly flexible with many per alias option parameters. Supports IPv4, and IPv6. Console, or installed as a service. Unicode. And other features.
dyndns.org (dynamic, static, &...
Yaddns is a small ddns client with multiple ddns server supports (dyndns.org, no-ip, ovh, changeip, dyndns.it, ...) and a high flexibility. Yaddns is particularly appropriate for embedded systems. View the project homepage for more informations.
Heyoka is an advanced tool to perform DNS tunneling in a flexible and reliable way. It uses binary encoding in order to speed up the data transfer, and spoofs the DNS requests in order to be harder to detect. Currently in alpha state.
Paessler: Easy to Use With Enterprise Power. Free Trial
A low-code dashboard makes monitoring intuitive for any admin, while scripting and custom sensors give experts full control.
You shouldn't have to choose between a monitoring tool that's easy to use and one that's powerful enough for a complex environment. PRTG's low-code interface lets any admin build dashboards, set alerts and monitor devices without scripting, while custom sensors and full API access are there when your team needs deeper control. One platform, no compromise. Download a free 30-day trial now.
DioNiSio is a DNS scanner written in ANSI C that only depends on sockets library and libc. It implements 3 scan methods (dictionary, massive reverse lookup and recursive zone transfers). Targeted to portability, rational resources usage, and easy use.
IASON is designed to analyze DNS, log files and data streams. IASON works in conjunction with a network firewall and IDS (Intrusion Detection System) software to block attacks while allowing legitimate requests to reach a domain name server.
The Dynamic DNS project aims to provide a free and open dynamic dns server and a suite of multi-language api tools for integrating dynamic dns services into applications.