
FreeRDP
FreeRDP is a free remote desktop protocol library and clients

FreeRDP is a free remote desktop protocol library and clients

Network-wide ads & trackers blocking DNS server

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

ZoneMinder is a free, open source Closed-circuit television software application developed for Linux which supports IP, USB and Analog cameras.

Advanced Phishing Protection: Suricata rulesets open and free

PacketFence is a fully supported, trusted, Free and Open Source network access control (NAC) solution. Boasting an impressive feature set including a…

Open-source XDR and SIEM platform for threat detection, log analysis, file integrity monitoring, vulnerability assessment, and compliance management…

Idiomatic Go library for invoking a network scanner binary, enabling host discovery, port scanning, service/OS detection, and scripted vulnerability…

Testing TLS/SSL encryption anywhere on any port


Open-source security monitoring platform for threat hunting, intrusion detection, log management, incident response, and endpoint visibility with…

A scanner for CVE-2026-55040 and CVE-2026-63520, designed to determine whether the server is affected by these two CVEs.

Rail-OT-Protector (ROP) — free, open-source cybersecurity scanning tool for rail and transit OT/SCADA networks. PowerShell + Bash scanners for…

Free BACnet/BMS vulnerability scanner for building automation systems. Detects CVE-2026-3611 (CVSS 10.0), CVE-2026-24060, and exposed HVAC/BAS…

Open-source macOS firewall that monitors and controls network connections, blocking unauthorized outbound and inbound traffic with per-application…

Curated collection of 200+ cybersecurity interview questions and answers covering Red Team, Blue Team, Web Security, Incident Response, and network…

Automated IP ban service that detects failed login attempts from event logs and files, blocking attackers on Windows and Linux via firewall…
