Open Source BSD DNS Software

This is a command line utility to resolve DNS requests via a SOCKS tunnel like Tor or a HTTP proxy.

A client for automaticly updating your EZ-IP.net, justlinux.com, dhs.org, dyndns.org, ods.org, gnudip.cheapnet.net, tzo.com, easydns.com dynamic hostname parameters. Includes daemon support that only sends updates if your IP address changes.

Self Integrated DNS DHCP Server Open Source Freeware Windows/Linux. Works as DHCP or DNS Server or both. Using both services automatically adds DHCP allotted hosts automatically to DNS Server. Support Relay Agent, PXEBOOT, BOOTP, Zone Trasfer, DHCP Range Filters. Download.

Blocky is a fast, lightweight DNS proxy and network-wide ad blocker designed for home labs and small networks that want Pi-hole-like filtering with more flexible DNS routing and modern protocol support. It blocks DNS queries using external deny lists while also supporting allow lists, and it can scope policies by client groups so different devices or households can have different rulesets. Unlike a single-purpose blocker, it supports advanced DNS behavior such as conditional forwarding and custom resolution for specific domains, letting you shape traffic in ways that fit split-horizon DNS, internal services, or privacy-focused upstream strategies. Performance is a major focus, with configurable caching, prefetching, and the ability to use multiple upstream resolvers simultaneously to reduce latency and avoid single points of failure.

MaraDNS is a fully open-sourced DNS server that strives to be secure. It is written in C (no C++) and is suitable for embedded systems.

Smbind is a PHP-based tool for managing DNS zones for BIND via the web. Supports per-user administration of zones, error checking, and a PEAR DB database backend. Demo and screenshots available.

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, & custom) freedns.afraid.org zoneedit.com no-ip.com easydns.com sitelutions.com dnsomatic.com ipv6tb.he.net tzo.com dhis.org two-dns.de www.dnsdynamic.org dnspark.com regfish.de www.ovh.com joker.com system-ns.com changeip.com dnsexit.com nsupdate.com loopia.com domains.google.com (requires SSL bridge, like stunnel) duckdns.org di.fi ddnss.de dynv6.com selfhost.de

Moved to GitHub → https://github.com/yoctobyte/visualsynapse --- 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.

An implementation of the DNS protocol in Java. dnsjava includes a set of classes that can be used within other programs and several user tools.

Ddclient is a Perl client used to update dynamic DNS entries for accounts on 'Dynamic DNS Network Services' free DNS service. It currently supports a lot of different routers and a few different services. The project moved to github. See https://www.github.com/ddclient/ddclient for support.

dnsjnio is an extension for dnsjava. dnsjava requires each query to run in its own thread on its own port. dnsjnio allows large numbers of queries to be run in a single thread using the non-blocking nio library.

Poweradmin is a web-based DNS administration tool for PowerDNS server. The interface has full support for most of the features of PowerDNS. It has full support for all zone types, for supermasters, full support for IPv6 and multi-language support.

Objective: To add capabilities to Bind 9 that will allow Bind backend databases to support adding and removing zones without interrupting normal server operation.

Zeroconf networking allows easy connection of hosts without needing to setup DHCP servers or assign static IPs. This project is intended to provide support for Zeroconf (http://www.zeroconf.org) networking for Linux and Unix machines.

THIS PROJECT HAS MOVED: For the latest releases and to contribute please go to https://github.com/montdidier/dnrd

The Internet Protocol Address Calculator is an open-source java-based tool. This calculator will assist network administrators to perform calculations over both IPv4 and IPv6 address space. A handy whois search client is also integrated into this tool.

A DNS server for Unix and Windows platforms, supporting authoritative service (master/slave) as well as caching. Also featuring a graphical master file editor (mfedit), a graphical DNS query tool (dnsquery) and a DNS programming library for C++ (poslib).

Dave's Naughty Stuff Blocker. This is an open source solution to allow administrators to filter and redirect selected "inappropriate" sites based on a list of specific sites and/or strings.

DNScat is a "swiss-army knife" tool to tunnel traffic through DNS servers. It is a small, yet powerfull tool, similar to netcat. In conjunction with PPP server, it allows to build a VPN using DNS packets. DNScat is a useful tool for penetration testing.

IP change detection script for UNIX systems. Can be used to map static domain to dynamic IP. Works behind NAT. Uses HTTP browser or network interface to get public IP. To be used with task scheduler (Cron or like, sample crontab file shipped).

Complemento is a collection of tools for pentesters: LetDown is a powerful tcp flooder ReverseRaider is a domain scanner that use wordlist scanning or reverse resolution scanning Httsquash is an http server scanner, banner grabber and data retriever

The dnsutl package is a collection tools to make administering DNS easier. These include reverse map generation, validation, and much more. All of these programs are robust when faced with all the peculiar semantics of DNS resource files.

gh-tool is a command-line interface to gethostby*, in libresolv/libc. It allows one to check the local system's notion of an IP->DNS or DNS->IP mapping, including aliases, directly, rather than digging for mappings in DNS, which may not pertain.

Speedy Whois allows you to create your own Whois website in minutes. It is based on the phpWhois class.