Open Source DNS Software
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DNS Software
View 46 business solutionsBrowse 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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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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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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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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Gobuster
Directory/File, DNS and VHost busting tool written in Go
Gobuster is a tool used to brute-force. This project is born out of the necessity to have something that didn't have a fat Java GUI (console FTW), something that did not do recursive brute force, something that allowed me to brute force folders and multiple extensions at once, something that compiled to native on multiple platforms, something that was faster than an interpreted script (such as Python), and something that didn't require a runtime. Provides several modes, like the classic directory brute-forcing mode, DNS subdomain brute-forcing mode, the mode that enumerates open S3 buckets and looks for existence and bucket listings, and the virtual host brute-forcing mode (not the same as DNS!). Since this tool is written in Go you need to install the Go language/compiler/etc. Full details of installation and set up can be found on the Go language website. Once installed you have two options. You need at least go 1.16.0 to compile gobuster. -
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theHarvester
E-mails, subdomains and names
theHarvester is a very simple to use, yet powerful and effective tool designed to be used in the early stages of a penetration test or red team engagement. Use it for open source intelligence (OSINT) gathering to help determine a company's external threat landscape on the internet. The tool gathers emails, names, subdomains, IPs and URLs using multiple public data sources. -
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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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NextDNS
NextDNS CLI client (DoH Proxy)
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. -
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SmartDNS
Local DNS server to obtain the fastest website IP
SmartDNS is a local DNS server. SmartDNS accepts DNS query requests from local clients, obtains DNS query results from multiple upstream DNS servers, and returns the results with the fastest access speed to clients, improving network access speed. At the same time, it supports the designation of specific domain name IP addresses, and high-quality matching to achieve the effect of filtering advertisements. Different from all-servers of dnsmasq, smartdns returns the resolution results with the fastest access speed. Supports Raspberry Pi, openwrt, ASUS router, windows and other devices. Supports domain name suffix matching mode, simplify filtering configuration, filter 200,000 records in less than 1ms. Supports domain name shunting, different types of domain names are queried to different DNS servers. Support standard Linux system (Raspberry Pi), various firmware of openwrt system, and native firmware of ASUS router. And support for Windows 10 WSL (Windows Subsystem for Linux). -
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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.
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ExternalDNS
Configure external DNS servers (AWS Route53, Google CloudDNS and other
ExternalDNS synchronizes exposed Kubernetes Services and Ingresses with DNS providers. Inspired by Kubernetes DNS, Kubernetes' cluster-internal DNS server, ExternalDNS makes Kubernetes resources discoverable via public DNS servers. Like KubeDNS, it retrieves a list of resources (Services, Ingresses, etc.) from the Kubernetes API to determine the desired list of DNS records. Unlike KubeDNS, however, it's not a DNS server itself, but merely configures other DNS providers accordingly, e.g. AWS Route 53 or Google Cloud DNS. In a broader sense, ExternalDNS allows you to control DNS records dynamically via Kubernetes resources in a DNS provider-agnostic way. ExternalDNS' allows you to keep selected zones (via domain-filter) synchronized with Ingresses and Services of type=LoadBalancer in various cloud providers. ExternalDNS can become aware of the records it is managing therefore ExternalDNS can safely manage non-empty hosted zones. -
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Blocky
Fast and lightweight DNS proxy as ad-blocker for local network
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. -
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MyHotspot
Wireless-LAN for Hotels ,Cafés and Shools
Give your customers the flexibility and extra mobility with Wireless Internet Access MyHotspot is a professional Wireless LAN Free software solution for providing internet access to your customers. Customers will be redirected to your login page to authenticate with user account or a prepaid-code before getting the Internet access. The PayPal payment option allows your customers to create and pay for network access directly. The software controls download, upload, data transfer, time usage, visited pages. MyHotSpot Billing software runs on your Windows PC, controls unlimited user or prepaid-code accounts, and displays data to customers on your self-branded pages. MyHotspot billing software is the definitive tool for managing your public WIFI-HotSpot in internet cafes, shools, hotels, bistros or gaming cafe / game center. -
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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.
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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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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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CoreDNS
CoreDNS is a DNS server that chains plugins
CoreDNS is a DNS server/forwarder, written in Go, that chains plugins. Each plugin performs a (DNS) function. CoreDNS is a Cloud Native Computing Foundation graduated project. CoreDNS is a fast and flexible DNS server. The key word here is flexible: with CoreDNS you are able to do what you want with your DNS data by utilizing plugins. If some functionality is not provided out of the box you can add it by writing a plugin. CoreDNS can listen for DNS requests coming in over UDP/TCP (go'old DNS), TLS (RFC 7858), also called DoT, DNS over HTTP/2 - DoH - (RFC 8484) and gRPC (not a standard). Serve zone data from a file; both DNSSEC (NSEC only) and DNS are supported (file and auto). Retrieve zone data from primaries, i.e., act as a secondary server (AXFR only) (secondary). Sign zone data on-the-fly (dnssec). Load balancing of responses (loadbalance). Allow for zone transfers, i.e., act as a primary server (file + transfer). Automatically load zone files from disk (auto). -
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iTXTech Daedalus
No root required Android DNS modifier and Hosts/DNSMasq resolver
No root required Android DNS modifier and Hosts/DNSMasq resolver. -
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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. -
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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 -
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OpenWrt-dist
A depot of OpenWrt device.
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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). -
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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.
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twert
Website, application blocking with scheduling. Self/Parental control.
Anti-procrastination website and application blocker with scheduling. Perfect for students and parents alike. A free and open-source alternative to Cold Turkey. Made by Dang Nam Anh, Truong Duc Quan and Trieu Tran Duc Tri. -
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THIS PROJECT HAS MOVED: For the latest releases and to contribute please go to https://github.com/montdidier/dnrd
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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).
