

NextDNS is described as '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' and is a very popular Ad Blocker in the security & privacy category. There are more than 100 alternatives to NextDNS for a variety of platforms, including iPhone, Mac, iPad, Web-based and Windows apps. The best NextDNS alternative is Pi-hole, which is both free and Open Source. Other great apps like NextDNS are Portmaster, AdGuard, Adblock Plus and SponsorBlock.


ADNS is a lightweight DNS-based ad blocker for Android. No VPN, no background services, no battery drain, no hassle.


Kaspersky Safe Kids includes an app for your child and a parent app which get connected via your My Kaspersky account
Crystal is a content blocker for iPhone & iPad designed to make the mobile web a great experience.




Free adblocker, anonymity, traffic and battery saver, firewall, and Internet speed increase.




The problem with other ad-blockers for Safari is that they are implemented as awful hacks: as an InputManager and/or ApplicationEnhancer. This compromises the stability of Safari and very often create problems when Apple releases a new version of Safari.



By blocking annoying ads and nosy trackers, adaware ad block nearly doubles your browsing speed! The most robust antivirus level cloud scanning technology of any ad blocker on the market, you’ll be safe from the latest cyber threat.
Ad Muncher is a powerful advert and popup blocking system for all browsers and advert-displaying programs like Pando, SopCast, ICQ, Morpheus, Kazaa, Grokster, Opera, PalTalk, iMesh, Bearshare, LimeWire, TVAnts.


CIRA Canadian Shield protects you from online threats such as malicious domains, phishing websites and helps to keep your personal data private. It also provides DNS privacy by keeping your DNS requests in Canada.




An extension to control requests. Provides front-end for Firefox webRequest.onBeforeRequest API for request management.



SmartViper is a web mining company dedicated to analyze web pages. They let anyone use their DNS servers for free. They log personal information with their website but it’s not clear what they log with their DNS service. They don’t share that information with third parties.
Hostsblock is a bash script for Linux designed to take advantage of the HOSTS file available in all operating systems to provide system-wide blocking of internet advertisements, malicious domains, trackers, and other undesirable content.


