Open-source alternatives to Blocky

This project is a network security tool providing an application network firewall, a DNS blocklist manager, and a VPN client with multi-hop capabilities. It functions as a traffic controller that allows or blocks internet access for specific applications on a device. The system distinguishes itself through a DNS-over-HTTPS firewall and traffic obfuscation tools that inject random packets to mask communication patterns and bypass regional internet censorship. It utilizes multi-hop routing to hide the origin of network traffic by chaining connections through multiple remote servers. The softwa

dnsproxy is an encrypted DNS proxy and traffic router that translates and forwards DNS requests between clients and upstream resolvers. It functions as a server for multiple secure protocols, including DNS-over-HTTPS, DNS-over-TLS, DNS-over-QUIC, and DNSCrypt, to protect queries from eavesdropping and tampering. The project differentiates itself through advanced routing and optimization capabilities. It utilizes a domain-based routing engine to direct queries to specific upstream servers via wildcard rules and employs parallel querying to return responses from the fastest responding network a

AdguardFilters is a collection of curated adblock filter lists, content blocking rulesets, and DNS blocklists. Its primary purpose is to provide the rules necessary to identify and remove advertisements, tracking scripts, and intrusive elements across web browsers and applications. The project includes specialized rules for cosmetic filtering to hide layout gaps and a malware domain database to block phishing and spyware destinations. It provides distinct filtering sets for different regions and purposes, such as social media blocking. The repository covers broad capability areas including m

Lists is a curated collection of DNS blocklists, a domain blocklist generator, and a categorized library of domains used for network content filtering. The project provides a command-line pipeline that aggregates upstream sources to build and validate blocklists used to redirect unwanted traffic to null addresses. The project distinguishes itself through a CLI-driven build pipeline that automates the fetching, validation, and daily regeneration of datasets. It organizes domains into discrete functional categories rather than a single monolithic list and exports them in multiple syntaxes, incl

Glider is a multi-protocol forward proxy, transparent proxy gateway, and network service provider. It functions as a DNS and DHCP server, a Linux IP set manager, and a network traffic load balancer. The project distinguishes itself through a protocol-translation bridge that translates traffic between different proxy schemes and a chain-based routing system that sequences multiple remote proxy servers. It supports transparent traffic interception at the system level and utilizes build-time protocol stripping to minimize the binary size of the executable. The system covers a broad range of net

NextDNS is a network DNS client and proxy that functions as a local resolver, forwarder, and DNS-over-HTTPS proxy. Its primary purpose is to route local name resolution requests to external providers using encrypted HTTPS traffic to improve privacy and bypass network restrictions. The service distinguishes itself by embedding client identity metadata—collected via mDNS or DHCP—into outgoing queries, allowing for per-device tracking and the application of unique filtering profiles. It features advanced routing logic, including split-horizon DNS for balancing public and private resolution, doma

AdGuardHome is a network-wide software solution that provides centralized control over domain name resolution, content filtering, and local network management. It functions as a recursive DNS server and DHCP address server, intercepting network traffic to enforce security policies and block unwanted content across all connected devices. By acting as a central gateway, it ensures that every device on a home or office network benefits from consistent protection and private, authenticated name resolution. The software distinguishes itself through granular client management and robust security fe

dnscrypt-proxy is an anonymizing DNS proxy and encrypted DNS resolver. It acts as a local DNS forwarder that secures internet lookups by wrapping standard DNS queries in encrypted tunnels using the DNSCrypt and DNS-over-HTTPS protocols to prevent eavesdropping and tampering. The project provides network privacy protection by routing DNS requests through anonymized relays to obfuscate the client's original IP address. It further distinguishes itself through traffic management capabilities, such as mapping specific domains to designated resolvers and distributing queries across multiple servers

SmartDNS is a local recursive DNS resolver and server that manages granular query rules, dual-stack networking, and encrypted gateway proxying. It functions as a DNS traffic filter and DNS64 translator, allowing IPv6-only clients to communicate with IPv4 servers. The project distinguishes itself through parallel upstream querying, which sends requests to multiple servers simultaneously to return the response with the lowest network latency. It supports DNS server virtualization, enabling the operation of multiple independent server instances on different ports, each with its own configuration

This project is a serverless DNS resolver and DNS over HTTPS gateway that translates domain names into IP addresses. It functions as an edge computing DNS filter designed to encrypt queries, prevent tampering, and improve user privacy on browsers and mobile devices. The system distinguishes itself by operating as an edge DNS traffic monitor that logs and analyzes request patterns in real time. It utilizes curated blocklists at the network edge to block malicious domains and trackers. The software provides capabilities for private DNS filtering, network traffic monitoring, and the management

mosdns is a DNS forwarding server and traffic filter that routes DNS queries to multiple upstream providers. It functions as a rule-based DNS router and a proxy for DNS-over-HTTPS and DNS-over-TLS to ensure secure DNS resolution. The system utilizes a pipeline-based request processing model and rule-based query routing to direct specific domain queries to different upstream servers. It implements pluggable transport layers and forwarding protocols, including HTTPS, TLS, and QUIC, to encrypt traffic and prevent eavesdropping. The project includes capabilities for upstream load balancing to di

Pi-hole is a self-hosted network utility that functions as a DNS sinkhole server to provide network-wide ad blocking. By acting as a dedicated network gateway, it intercepts and discards requests for known advertising, tracking, and malicious domains across an entire local network, preventing unwanted content from loading on any connected device. The software operates through a lightweight background daemon that handles high volumes of concurrent DNS queries with minimal resource overhead. It utilizes a host-file injection mechanism to redirect traffic toward its local filtering engine and ap

PCAPdroid is an Android network traffic analyzer and packet capture tool that operates without requiring root access. It functions as a VPN-based firewall and network controller, capable of recording traffic in PCAPng format and blocking connections to specific domains or malicious hosts. The project distinguishes itself through a proxy-based system for decrypting TLS traffic and routing device network traffic through SOCKS5 proxies or the Tor network. It further allows for the modification of live HTTP requests and responses via custom scripts. Its capabilities cover application connection

This project provides a collection of domain blocklists designed to prevent network requests from reaching specific destinations. These lists function as databases of problematic and corporate web addresses that can be imported into content filters, network security tools, and system-level hosts files. The lists focus on blocking known malicious domains and corporate web services to control network access. These curated sets are organized to filter harmful websites and company-owned domains across local devices or networks. The project manages these entries through flat-file storage and stat

PowerDNS is DNS server software used for serving authoritative and recursive DNS records. It functions as both an authoritative DNS server, providing definitive records for specific domains from trusted databases, and a recursive DNS resolver that finds answers for any domain by iteratively querying external servers. The project distinguishes itself through a backend-abstraction layer that decouples server logic from data storage, allowing records to be served from SQL databases, zone files, and external APIs. It includes a geo-aware DNS router to direct users to the nearest server based on t

Tenta DNS is a recursive and authoritative domain name server implementation written in Go. It provides secure network resolution services by translating human-readable domain names into machine addresses while enforcing cryptographic standards to ensure data privacy and authenticity. The software distinguishes itself through a focus on secure transport and integrity verification. It utilizes encrypted tunnels for upstream communication to prevent eavesdropping and incorporates a validation engine to verify digital signatures on resource records. To manage global traffic, the system supports

Content-farm-terminator is a browser extension designed to restrict access to low-quality websites and content farms. It functions as a content blocker and URL filtering tool that intercepts network requests and enforces domain-based access policies to prevent navigation to untrusted online sources. The extension distinguishes itself through proactive visual feedback and flexible access control. It highlights hyperlinks pointing to blacklisted domains directly on webpages, allowing users to identify potentially unreliable content before clicking. Users can manage their filtering preferences t

ACL4SSR is a rule set generation and conversion system that produces ready-to-use proxy configuration files for multiple client formats, including Clash, Quantumult, Surge, Surfboard, and Trojan. It combines modular rule fragments from a curated library, applies user-defined overrides, and filters traffic by domain category or geo-IP to produce optimized routing configurations. The project distinguishes itself through its format-agnostic conversion pipeline, which transforms proxy rule sets between different client formats using external open-source converters as a middleware layer. It provid

This repository contains the HTML specification, which defines the core standards for web page structuring, content organization, and document rendering. It establishes the fundamental algorithms for state-machine-based tokenization, tree construction for the document object model, and origin-based security isolation. The specification provides a framework for defining custom elements with independent lifecycles and registries. It also details the requirements for cross-document communication, session history management, and the synchronization of interface properties with content attributes.

Hickory-DNS is a DNS implementation written in Rust that provides a full suite of DNS capabilities: a client library for querying and constructing DNS messages, a recursive resolver with caching, an authoritative DNS server, and support for DNSSEC validation and signing. It can operate as a DNS-over-TLS (DoT) and DNS-over-HTTPS (DoH) client, and includes a multicast DNS (mDNS) implementation for local network discovery without a central server. The project differentiates itself through its integrated DNSSEC pipeline, which validates signatures by chaining from a root trust anchor and can auto

This project is a Go DNS library used for implementing DNS clients and servers. It provides a toolkit for packet exchange, record parsing, and the development of custom nameservers. The library includes a DNS server framework and a zone manager for parsing standard zone files and synchronizing data via zone transfers. It features a dedicated DNSSEC implementation library for generating cryptographic keys and validating signatures, as well as a TLS transport for encrypted connections between clients and servers. The system covers a broad range of capabilities including DNS resolver functional

ProxySQL is a database proxy designed to route and balance traffic between applications and MySQL or PostgreSQL servers. It provides database high availability by monitoring backend server health and automatically rerouting traffic to healthy nodes during failover events to prevent downtime. The system integrates with generative AI models by proxying requests through a protocol handler, creating a bridge that allows large language models to access structured data. The project includes capabilities for traffic management through automatic failover routing and cluster topology discovery. It op

This project is a security hardening guide and privacy configuration manual for macOS. It provides a comprehensive set of instructions for configuring system settings to improve privacy, reduce the attack surface, and implement a malware defense framework. The guide covers technical methods for validating software notarization, verifying application sandboxing, and auditing system activity. It distinguishes itself by providing detailed workflows for restricting high-risk features and applying advanced security configurations to protect the operating system. The documentation covers several k

CoreDNS is a modular domain name system server designed for cloud-native environments. It functions as a flexible DNS resolver and forwarder that manages network traffic by routing queries based on zone-based rules and authoritative data. The server is built to integrate with service discovery systems, enabling it to map service names to network addresses within containerized infrastructure. The project is defined by a plugin-based request pipeline that allows for the extension of server functionality through custom modules. These plugins can intercept, modify, or log network requests in real

BPB-Worker-Panel is a control panel designed for deploying and managing VLESS and Trojan proxies hosted on Cloudflare Workers. It functions as a proxy subscription generator and a manager for secure DNS over HTTPS servers and WireGuard configuration provisioning. The project distinguishes itself through network traffic obfuscation capabilities, utilizing packet fragmentation and SNI spoofing to evade detection. It provides specialized administration for Cloudflare Warp and Warp Pro connections, including the ability to optimize endpoints and export WireGuard configurations. The system covers

Devilbox is a containerized development environment that provides a reproducible suite of web servers, databases, and language runtimes managed through a unified configuration. It functions as a Docker-based local development stack for LAMP and MEAN software stacks and as a manager for switching between different versions of these services to match specific project requirements. The system distinguishes itself by automating local network orchestration. It includes a Docker-based virtual host manager that automatically maps local directories to custom domains and a local DNS and SSL orchestrat

dnsguide is a software implementation of the DNS protocol designed to handle queries and responses between clients and nameservers. It functions as a recursive DNS server and network service tool for managing the resolution of domain names within local or wide area networks. The project provides a framework for building a custom DNS server, incorporating recursive resolution logic and stub resolver integration to translate hostnames into IP addresses. It is designed for implementing the DNS protocol from scratch to facilitate network protocol learning and custom name resolution. The implemen