SpiderFoot automates OSINT for threat intelligence and mapping your attack surface.

MISP (core software) - Open Source Threat Intelligence and Sharing Platform

Open Cyber Threat Intelligence Platform

Collection of Cyber Threat Intelligence sources from the deep and dark web

Web app that provides basic navigation and annotation of ATT&CK matrices

Cyber Threat Intelligence Repository expressed in STIX 2.0

Curated Intelligence is working with analysts from around the world to provide useful information to organisations in Ukraine looking for additional free threat intelligence. Slava Ukraini. Glory to Ukraine.

Scripts and a (future) library to improve users' interactions with the ATT&CK content

Public Repository of Open Source Tools for Cyber Threat Intelligence Analysts and Researchers

Security control framework mappings to MITRE ATT&CK provide a critically important resource for organizations to assess their security control coverage against real-world threats and provide a bridge for integrating ATT&CK-based threat information into the risk management process.

MITRE ATT&CK Website

A python module for working with ATT&CK

OASIS TC Open Repository: Python APIs for STIX 2

Modules for expansion services, enrichment, import and export in MISP and other tools.

Free, easy to setup PBX for small business based on Asterisk 16 core

OpenCTI Connectors

STIX data representing MITRE ATT&CK

The work on GreuhZbugs Liberation Mission for Arma 3 continues...

Yet another Ransomware gang tracker

A collection of intelligence about Log4Shell and its exploitation activity.