Browse free open source DNS software and projects below. Use the toggles on the left to filter open source DNS software by OS, license, language, programming language, and project status.

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  • 1

    DNS2SOCKS

    DNS to SOCKS or HTTP proxy

    This is a command line utility to resolve DNS requests via a SOCKS tunnel like Tor or a HTTP proxy.
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    Downloads: 3,747 This Week
    Last Update:
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  • 2

    Acrylic DNS Proxy

    A local DNS proxy which improves the performance of your computer

    Acrylic is a local DNS proxy for Windows which improves the performance of your computer by caching the responses coming from your DNS servers and helps you fight unwanted ads through the use of a custom HOSTS file (optimized for handling hundreds of thousands of domain names) with support for wildcards and regular expressions. When you browse a web page a portion of the loading time is dedicated to name resolution while the rest is dedicated to the transfer of the web page contents. What Acrylic does is to reduce the time dedicated to name resolution for frequently visited addresses closest to zero possible. Furthermore Acrylic's sliding expiration caching mechanism and DNS silent updates are able to improve the browsing experience independently of the browser. With Acrylic you can also gracefully overcome downtimes of your DNS servers without disrupting your work, because in that case you will at least be able to connect to your favourite websites and to your email server.
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    Downloads: 583 This Week
    Last Update:
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  • 3
    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.
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    Downloads: 2,529 This Week
    Last Update:
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  • 4
    teemIP - CMDB & DDI solution

    teemIP - CMDB & DDI solution

    teemIP : Open source IPAM & DDI solution with CMDB integration.

    teemIP is an open source, web-based IP Address Management (IPAM) and DDI solution built on the iTop framework. It provides comprehensive IP management: IPv4/IPv6 plan management, subnet hierarchy, IP lifecycle, VLAN and DNS/DHCP integration. teemIP is now maintained by the teemIP SAS founding team: Christophe Naud (original creator), Martin de Laval and Quentin Ville. The company is being officially incorporated in July 2026. The project remains open source under AGPL v3. Professional support, integration services and subscriptions: https://www.teemip.com
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    Downloads: 108 This Week
    Last Update:
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  • 5
    Small HTTP server

    Small HTTP server

    Universal server

    It is not only a web server, it is also Mail server, DNS server, FTP server, TFTP server, Proxy server, VPN server and client... All in one! This program will help you to open all the possibilities Internet can offer for your company - public site, provide Internet access and personal mailboxes for each employee! HTTP server. Server Side Includes. Regular expression in SSI. CGI interface for scripts (Executable files; Perl,PHP, or another external interpreters) ISAPI interface. Virtual hosts and directories Mail POP3 server. SMTP server. FTP server HTTP proxy server DNS server DHCP server HTTP TLS VPN server
    Downloads: 19 This Week
    Last Update:
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  • 6
    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.
    Downloads: 15 This Week
    Last Update:
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  • 7

    inadyn-mt - dynamic DNS client

    Multi-platform inadyn, inadyn-advanced DDNS client fork.

    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
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    Downloads: 13 This Week
    Last Update:
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  • 8
    THIS PROJECT HAS MOVED: For the latest releases and to contribute please go to https://github.com/montdidier/dnrd
    Downloads: 12 This Week
    Last Update:
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  • 9
    MasterDnsVPN

    MasterDnsVPN

    Advanced DNS tunneling VPN for censorship bypass

    MasterDnsVPN is a research-oriented DNS tunneling VPN project that carries TCP traffic through DNS queries and responses. It is designed for restrictive network environments where DNS may remain available even when other connection methods are limited. The project focuses on stability, speed, and compatibility across different resolver behaviors. It uses a custom protocol with ARQ, low overhead, resolver balancing, and multipath behavior to improve performance under packet loss. MasterDnsVPN also includes client and server configuration files, Docker support, and installation scripts for easier deployment. It is best understood as an experimental transport system for DNS-based tunneling rather than a general-purpose commercial VPN.
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    Downloads: 5 This Week
    Last Update:
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  • 10
    Poweradmin
    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.
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    Downloads: 7 This Week
    Last Update:
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  • 11
    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).
    Downloads: 6 This Week
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  • 12
    dnswalk is a DNS debugger. It performs zone transfers of specified domains, and checks the database in numerous ways for internal consistency, as well as accuracy.
    Downloads: 6 This Week
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  • 13

    OpenSource Domain Name Registry Platform

    Open-Source Domain Name Registry Platform based on Perl and mod_epp

    EPP Server, robust EPP-based Domain Name Registry System for New gTLD (.yourbrand) or for second level domains *.yourdomain.com. EPP Server supports the following RFCs: - RFC 5730 - (EPP) - RFC 5731 - (EPP) Domain Name Mapping - RFC 5732 - (EPP) Host Mapping - RFC 5733 - (EPP) Contact Mapping - RFC 5734 - (EPP) Transport over TCP The interface supports the following object types and transactions: - Domain commands: check, info, create, update, renew, delete, transfer - Host commands: check, info, create, update, delete - Contact commands: check, info, create, update, delete - Session commands: login, logout, hello, poll Uses the 'prepaid' billing model. The EPP Server, gives Registrars the ability to add, modify and delete information associated with domain names, name servers, contacts information on a real-time basis. It is important to note that each Registrar may only effect information about domain names for which it is responsible. mod_epp 1.10 for Apache 2.
    Downloads: 2 This Week
    Last Update:
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  • 14
    DynDNS Simply Client

    DynDNS Simply Client

    Small standalone dyndns client

    DynDNS Simply Client is a computer application (for DynDNS users) that keeps your hostname's IP address up-to-date. The DynDNS Simply Client periodically checks your network's IP address and it sends (updates) the new IP address to your hostname in your Dyn account (http://dyn.com/dns/dyndns-free).
    Downloads: 2 This Week
    Last Update:
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  • 15
    A client to update the IP automatic with http://freedns.afraid.org/ It is a Windows Service that works in the lastest versions of Windows (Windows 7 and Windows 2008). Also it has the possibility of sending an e-mail whenever the IP changes.
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    Downloads: 3 This Week
    Last Update:
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  • 16

    Visual Synapse

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

    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.
    Downloads: 3 This Week
    Last Update:
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  • 17
    Objective: To add capabilities to Bind 9 that will allow Bind backend databases to support adding and removing zones without interrupting normal server operation.
    Downloads: 1 This Week
    Last Update:
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  • 18
    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.
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    Downloads: 2 This Week
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  • 19
    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.
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    Downloads: 1 This Week
    Last Update:
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  • 20
    MyDNSConfig is a web-interface that allows to administrate/create/delete DNS records easily. All data is stored in a MySQL database, and this MySQL database is used by the MyDNS name server to retrieve the DNS records.
    Downloads: 1 This Week
    Last Update:
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  • 21
    THIS PROJECT IS DISCONTINUED. ProBIND is a web application designed for managing the DNS zones for one or more servers running the ISC BIND DNS server software. For more information, visit the project website.
    Downloads: 1 This Week
    Last Update:
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  • 22
    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.
    Downloads: 1 This Week
    Last Update:
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  • 23
    phpDHCPAdmin

    phpDHCPAdmin

    Manage your ISC DHCPD service

    phpDHCPAdmin Manage the ISC DHCPD Service. Groups, User access levels, PXE, Multiple subnets, lease management, graphing features, classes support, multiple pool support. Built with security, flexibility and usage for large scale dhcp environments
    Downloads: 1 This Week
    Last Update:
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  • 24
    JmDNS is a java implementation of the IETF draft RFP multicast extensions for DNS. This project contains the needed elements for service discovery and service registration. It is compatible with Apple\'s Rendezvous service. This project has been moved to http://www.jmdns.org. This site is no longer actively maintained. Please visit us at our new home!
    Downloads: 2 This Week
    Last Update:
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  • 25
    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.
    Downloads: 1 This Week
    Last Update:
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