Self-hosted Core Network Services (DNS, DHCP, IPAM) tools

Pi-hole is a network-wide DNS sinkhole that blocks ads and trackers for all devices on your network, with a web dashboard, query logs, and optional DHCP server.

Actively maintained

Alternative to:

AdGuard+7

Open-source DNS-based ad & tracker blocking server for networks. Offers per-device rules, parental controls, encrypted upstream DNS (DoH/DoT/DNSCrypt), web UI and API.

GPL-3.0Actively maintained

Alternative to:

AdGuard+5

MyIP (IPCheck.ing) is an open-source web IP toolbox that detects local/public IPs, runs DNS leak and WebRTC checks, speed/latency/MTR tests, availability and whois lookups.

MITActively maintained

Alternative to:

WhatIsMyIPAddress.com+10

Cross-platform DNS server with authoritative/recursive modes, encrypted DNS (DoH/DoT/DoQ), DNSSEC, ad/malware blocking, DHCP, and an HTTP API with web admin UI.

GPL-3.0Actively maintained

Alternative to:

Cloudflare DNS+10

Open-source DNS proxy and network-wide ad-blocker for local networks. Supports DoH/DoT, per-client rules, caching, deep CNAME inspection, Prometheus metrics, Docker and Helm.

Apache-2.0Actively maintained

Alternative to:

NextDNS+7

Standards-based validating recursive DNS resolver with DNSSEC validation, DNS-over-TLS/HTTPS support and configurable caching for privacy and performance.

BSD-3-ClauseActively maintained

Alternative to:

Cloudflare DNS+9

OPNsense is an open source FreeBSD-based firewall and routing platform with a web GUI, API, VPN, traffic shaping, and security features for networks and homelabs.

BSD-2-ClauseActively maintained

Alternative to:

Fortinet FortiGate+12

ddclient is a Perl-based Dynamic DNS client that detects IP changes and updates DNS records across many supported DDNS and DNS provider APIs.

GPL-2.0Actively maintained

Alternative to:

DynDNS+5

Lightweight DDNS client to keep DNS A/AAAA records updated across many providers, available as a container or standalone binaries with a built-in web UI.

MITActively maintained

Alternative to:

No-IP+3

OpenStreetMap is a community-built map of the world with a web interface and APIs for editing, browsing, and accessing open geographic data.

Simple, robust BitTorrent tracker implementation for Node.js, providing client and server components with HTTP/UDP/WebSocket tracking and built-in stats endpoints.

Sync AdGuard Home settings, filters, rewrites, DHCP/DNS config, and clients from an origin instance to one or more replicas on a schedule or on demand.

OpenPrinting CUPS is a standards-based printing system providing IPP print services, printer administration, and command-line tools for Linux and Unix-like systems.

Fully-replicated DNS, DHCP and TFTP server with ad‑blocking, web UI, API, Prometheus metrics and multi-site replication for small to medium networks.

GPL-3.0Actively maintained

Alternative to:

Cisco OpenDNS (Umbrella)+10

Self-hosted DNS sinkhole written in Go that blocks ads, trackers and malicious domains; provides a modern web dashboard, Docker support, DoT/DoH options and realtime stats.

MITActively maintained

Alternative to:

AdGuard+5

Open source PHP app to manage domains, SSL certificates, registrars, hosting, DNS, IPs, and related internet assets, with reporting and optional WHM/cPanel data warehousing.

GPL-3.0Likely dormant

Alternative to:

Domain-Monitor+3

UnrealIRCd is an open-source, modular IRC server implementing IRCv3, TLS, anti-spam/flood protections, GeoIP and admin APIs for running public or private IRC networks.

Lightweight C service that spoofs local IPs and sends Wake-on-LAN packets to automatically wake registered LAN machines when relevant traffic is detected.

GNUnet is a network protocol stack and framework for building secure, distributed, privacy-preserving peer-to-peer applications and services.

Activity unknown

Alternative to:

ZeroTier