Open Source Linux DNS Software

NextDNS protects you from all kinds of security threats, blocks ads and trackers on websites and in apps and provides a safe and supervised Internet for kids, on all devices and on all networks. Determine your threat model and fine-tune your security strategy by enabling 10+ different types of protections. Use the most trusted threat intelligence feeds containing millions of malicious domains, all updated in real-time. Go beyond the domain, we analyze DNS questions and answers on-the-fly (in a matter of nanoseconds) in order to detect and block malicious behavior. With usually only a few hours between domain registration and the start of an attack, our threat intelligence system is built to catch malicious domains earlier than classic security solutions. Block ads and trackers on websites and in apps, including the most devious ones. Use the most popular ads & trackers blocklists, millions of domains all updated in real-time.

Visual Synapse are component wrappers around the Synapse tcp/ip libraries. It wraps a few common internet protocols, like HTTP, UDP, DNS, ICMP, TCP and SMTP to multi-threaded components that can be used with Delphi, Kylix, Freepascal and C++ Builder.

Local DNS server, that act as a proxy and will rewrite request according to a config file and an "active" environement. Usefull to switch easily between diffent configuration without touch the host file. small web server embeded to display current configuration, control active environment and reload configuraiton.

DCF is based on ACE,it provides a optional Name-Service for locating service, a single interface for both client and server. Anyone can embed DCF in a program to implement communication easily.

The EPPTT is a flexible, script based EPP client. It can be used to mount fully automated and comprehensive tests against different implementations of EPP. It has both an intutive command line interface as well as a user friendly web interface. EPPTT

This library makes SRV records in DNS simple to use; actually, due to the fallback for classical connection mechanisms, it makes building a network connection in general extremely simple.

A pure java DNS client implementation. Consists of a library and utilities for looking up the Internet domain names. The utilities are also able to fetch an entire domain zone and save it in the standard DNS zone file format.

This project provides an object-oriented and extensible PHP library for managing DNS zones/domains/hosts for the PowerDNS server. It provides a single, consistent interface to access various databases and LDAP directories

PHPBind9 is a PHP5 class-library which allows webdevelopers to easely read and modify DNS zonefiles and the Bind9 configuration file "named.conf".

Powerfull DNS Server (fully customizable and *scriptable*) and pure Java DNS Protocol implementation

hostupd is a command-line tool which allows the user to update a dns server which supports dynamic updates (rfc2136), such as bind >= 8. Its main goal is to simplify the dns-updating task, but to remain flexible.

JNeta is a Java WebStart client that can easily run light server and client components like HTTP, FTP, DHCP servers and so on. It aims to be a complete extensible plaftorm on server and client side thanks to its plug-in architecture.

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.