Blocklist GitHub Repositories (2026) · Open Source Tools

Free, open-source application firewall for macOS. Little Snitch alternative with zero telemetry. Native SwiftUI world map, rules manager, DNS over HTTPS, pf-based blocking. Signed, notarized, MIT licensed.

Open-source IDS/IPS, WAF and bot detection for Linux, Windows, Docker and Kubernetes, with a crowdsourced blocklist of malicious IPs.

Blocks specific sites from appearing in Google search results

10-20x more blocks for your CrowdSec bouncers — 120k+ IPs from 32 free threat feeds

IP lists full of bad IPs - Updated every 2H

+30,000 free and disposable email domains in a single list, validated against DNS every day.

Real-time phishing & scam domain blocklist - 205k+ curated threats, 1M+ community, free API, multiple formats

Completely block Google and its services

oisd blocklist

Keeps your preferred Bit Torrent client blocklist up to date to support your privacy and security

This repo contains the domain names and the resolved IPv4/IPv6 addresses of public DoH server

IP lists for malware, bots, scanners, etc.

Knock-Knock: A Live, Multi-Protocol Honeypot Dashboard of Internet Break-in Attempts - 13 Protocols, an Extensible Framework, and a Threat-Intelligence Database Serving a Public IP Blocklist Feed

A Swedish filter for uBlock Origin.

A collection of unified blocklists designed to provide complete filtering capabilities for different online threats. Curated from multiple sources (click SOURCES.md to view), these blocklists offer a robust solution for blocking ads, malware, trackers, and other unwanted content.

Aggregation of lists of malicious domains (phishing) that can be integrated into FortiGate firewalls and other products.

CIDRAM: Classless Inter-Domain Routing Access Manager.

Phase II evidence package: complete-zone scan of ICANN registrar #4318 Trustname.com / Fewmoretaps OÜ — 15,040 domains tracked, 4,276 classified IOC (3,293 HIGH). Daily updated IOC feeds, SIEM CSV, operator clusters.