Open Source Android DNS Apps

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.

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.

No root required Android DNS modifier and Hosts/DNSMasq resolver.

This is a DNS-based host blocker for Android. In the default configuration, several widely-respected host files are used to block ads, malware, and other weird stuff. On the first start, you must manually update the hosts files (using the refresh button) before the service can work correctly (issue #1); and you must also update the hosts files yourself regularly for now. Items in the hosts and DNS servers lists can be moved around and removed) of the list using standard RecyclerView interactions (long press makes the entry movable, swipe to either side removes it). For hosts, a later entry overrides a previous entry; for DNS servers, the first server is preferred. There's also no validation of input, so DNS servers that are not valid IPv4 addresses are not rejected, neither are URLs for DNS server entries (we intend to support URLs in the future, so you can point the app to a remote list of servers).

InviZible Pro is a free, open-source Android application designed to improve online privacy, security, and anonymity. It combines Tor, DNSCrypt, and Purple I2P within a single interface for managing encrypted network connections. Tor routes traffic through multiple relays to reduce exposure of a user's identity and location. DNSCrypt encrypts DNS queries and helps protect against DNS surveillance and spoofing. Purple I2P provides access to decentralized anonymous services and I2P websites. The application also offers firewall controls, tracking protection, and configurable network routing. InviZible Pro works on rooted and non-rooted Android devices, with advanced settings for customizing individual privacy modules.

KeexyBox has moved. This open-source project is now archived. Today, our mission is to help families create a safer and healthier digital life. KeexyBox is now a simple web-based parental Internet protection platform that helps parents protect children online, manage Internet access, and build better digital habits for the whole family—without dedicated hardware. 👉 Learn more: https://keexybox.com

An InApp and Browser Adblocker based on hosts file blacklists