Adblock Fast

A lightweight DNS-based ad blocker for OpenWrt routers using dnsmasq, smartdns, Unbound or BIND.

FreeOpen sourceSelf-hosted
Official websitegithub.comDocumentationdocs.mossdef.org

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About Adblock Fast

Adblock Fast blocks ads and trackers for every device on a network by filtering DNS on an OpenWrt router. It works with dnsmasq, smartdns, Unbound or BIND, downloads and processes blocklists in parallel, installs them and then exits, so it uses very little memory while running.

It supports a persistent cache, reverts its changes if DNS resolution fails after a restart, and offers an optional LuCI web interface for custom block and allow lists.

Strengths

  • Very low memory use on small routers
  • Works with several DNS resolvers
  • Rolls back if DNS breaks after a restart
  • Optional web interface through LuCI

Limitations

  • Requires a router running OpenWrt
  • Small project with a limited user base

Details

Pricing
FreeFree and open source.
License
AGPL-3.0
Developer
mossdef.org
Platforms
Self-hosted
How it runs
Self-hosted
Account
Not required
Best suited for
Network-wide ad blocking on an OpenWrt router
Categories
DNS filtering
Last verified
Added
Provenance
Facts checked against the developer's own pages and store listings, 1 sources on file.

Alternatives to Adblock Fast

Compare all

Software that can replace Adblock Fast for an important use case, and what changes if you switch.

  • OpenWrt adblock

    A DNS-based ad and abuse domain blocking package for OpenWrt routers, covering every device on the network.

    FreeOpen sourceLinuxCommand line

    OpenWrt adblock also runs on OpenWrt routers and is installed from the standard package feeds, with a command-line interface and many configuration options.

  • Pi-hole

    A DNS server for your home network that refuses to look up ad and tracker domains, for every device at once.

    FreeOpen sourceLinuxSelf-hostedWeb

    Pi-hole runs on a separate Linux machine instead of the router, adding a web interface, DNS caching and optional DHCP serving for the network.

  • AdGuard Home

    Network-wide ad and tracker blocking in a single binary, with encrypted DNS built in rather than bolted on.

    FreeOpen sourceWindowsmacOSLinuxWebSelf-hosted

    AdGuard Home runs as one binary on many systems with a web interface, encrypted DNS serving and per-client rules, instead of relying on the router's resolver.

  • Diversion

    A DNS-based ad blocker that runs on Asus routers with Asuswrt-Merlin firmware.

    FreeProprietarySelf-hostedCommand line

    Diversion provides router-based ad blocking for Asus routers on Asuswrt-Merlin firmware rather than OpenWrt, and is not open source.

  • pfBlockerNG

    A pfSense package that adds IP blocklists, country blocking and DNS blocklists to the firewall.

    FreeProprietarySelf-hosted

    pfBlockerNG moves blocking to a pfSense firewall, adding IP blocklists and country blocking alongside DNS blocklists, though setup is more involved.

  • Blocky

    Lightweight DNS proxy with blocklists, written for container deployments.

    FreeOpen sourceWindowsmacOSLinuxSelf-hostedCommand line

    Blocky is a lightweight DNS proxy with blocklists and per-client rules, suited to containers and small boards rather than tied to OpenWrt.

Similar software

Related functionality, not necessarily a direct replacement.

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