About OpenSec Atlas
A curated, open-source cybersecurity directory that helps practitioners find the right tool fast. Independent, free to use, continuously updated.
What You Can Do
Find a Resource
Use keyword or AI search to find the perfect tool, script, or framework for your task.
Build a Security Stack
Explore collections of tools that work together to solve complex problems, like building a free SIEM.
Explore by Tactic
Browse resources mapped to specific MITRE ATT&CK tactics to support your security operations.
Architect a Solution
Use our AI strategist to get expert guidance and generate implementation plans.
6,000+
Open-source resources
100+
Categories across all domains
Updated daily
Fresh commits and new tools
Mapped frameworks
MITRE ATT&CK, CIS Controls, NIST
Our Mission
Make the best open-source security resources easy to discover, evaluate, and use. We prioritize practitioner value, clarity, and transparency.
- Curated, not crawled
- Open and transparent criteria
- Practical, practitioner-first
How Curation Works
Source
We monitor reputable lists, communities, and repos.
Health check
Signal from stars, commits, docs, license.
Tag & map
Categories, platforms, MITRE/CIS/NIST.
Review & publish
Brief summary and links.
Monitor
Auto-watch for changes; archive if stale.
What You’ll Find
Commercial tools are not listed; we focus on open-source and freely accessible material.
Mapped to Real-World Frameworks
Every item is tagged by function and mapped where applicable to MITRE ATT&CK tactics/techniques, CIS Controls, and NIST guidance to support real workflows.
Who We Are
OpenSec Atlas is maintained by a small team of security practitioners. Community suggestions and corrections are welcome.Contact us.
Contribute
Submit a Tool
Share a project we should include in the directory.
Submit a ToolRequest a Category
Suggest new tags or ways to organize tools.
Request a CategorySubmissions are reviewed weekly.
What's Next
- Saved collections and sharing
- Side-by-side tool comparisons
- Public API (read-only)