Lockdown Privacy is an Open Source and free firewall for your iOS device. We built the product to help protect users from app developers and analytics companies that are monetizing user data without consent or transparency.



DNS66 is described as 'Blocks advertisements on Android by intercepting DNS requests using Android's VPN layer and blocking requests for blacklisted hosts' and is a Ad Blocker in the security & privacy category. There are more than 25 alternatives to DNS66 for a variety of platforms, including Android, iPhone, Android Tablet, iPad and F-Droid apps. The best DNS66 alternative is AdGuard, which is both free and Open Source. Other great apps like DNS66 are NextDNS, RethinkDNS, AdAway and Blokada.
Lockdown Privacy is an Open Source and free firewall for your iOS device. We built the product to help protect users from app developers and analytics companies that are monetizing user data without consent or transparency.



Based on DNS66, this projects aims to continue the goals of the original app with modern Android development practices.




Block This 3.0 is a FREE and Open Source ad blocker for Android that works in all apps and browsers! It provides the additional benefits of malware protection, increased browsing speed and reduction of mobile data traffic.



Quad9 Connect is an Android and ChromeOS app that sends your DNS queries to Quad9's secure, private, open recursive DNS service.
DNSecure is a configuration tool of encrypted DNS for iOS/iPadOS. An encrypted DNS service you configure will be used system-wide.


AdClear is the premier non-root adblocker for Android users. AdClear’s technology filters out advertisers before they invade your browsing or app experience.




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


Privacy isn’t default. Take it back with De1984 Firewall and Package Control.




Consolidating and extending hosts files from several well-curated sources. Optionally pick extensions for porn, social media, and other categories.
Free adblocker, anonymity, traffic and battery saver, firewall, and Internet speed increase.




DNSCrypt is a protocol that authenticates communications between a DNS client and a DNS resolver. It prevents DNS spoofing. It uses signatures to verify that responses originate from the chosen DNS resolver and haven't been tampered with.




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.


