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Awesome Cyber Security Heaven

A hand-curated, license-aware map of the best free cybersecurity tools — from pentesting and bug bounty to OSINT, threat intel, DFIR, DevSecOps and AI/LLM security. Free, open-source and free-tier entries all earn their place.

🧭 1435 curated tools 🏰 14 themed realms 🗓️ 2026 edition 🆓 100% free / free-tier 🔬 license-verified 💯 no paywalls, no SaaS wrappers
1435
Curated Tools
14
Themed Realms
14
PDF Dossiers
100%
Free & Open
2026
Re-verified Edition
The Realms

Fourteen worlds of free security tooling

Every realm is a deep-researched, link-verified chapter with its own PDF dossier — every tool license-checked, actively-maintained or a historically-notable classic.

Deep Research

📄 Realm dossiers — PDF reports

Every realm ships as a designed, printable PDF dossier — census-synced with live GitHub API stats, license mix, and the full curated inventory. Free forever, CC0.

Companion Engines

Scan with the same philosophy

The Heaven list is curated by the team behind two open-source scanning engines — deterministic verdicts, self-hosted, zero AI guesswork.

FAQ

❓ Frequently asked questions

What the list is, how tools get in, and how to use it well.

What is Awesome Cyber Security Heaven?
A hand-curated map of the 1435 best free cybersecurity tools — pentesting, bug bounty, OSINT, threat intelligence, DFIR, DevSecOps and AI/LLM security. Every entry is license-verified and sorted into 14 themed realms, from The Armory to The AI Forge.
Are all 1435 tools really free?
Yes — the editorial bar admits free and free-tier tools only: no paywalls, no SaaS wrappers. Each entry is license-checked (MIT, Apache-2.0, GPL and friends) so you know what you can use commercially before you click.
What are the realm PDF dossiers?
Every realm ships as a designed, printable PDF dossier — a deep-research report census-synced with live GitHub stats, license mix and the full curated inventory. Free forever under CC0, regenerated whenever the list changes.
How do I get a tool listed?
Open an issue or pull request on the list repository. The bar: an OSI-compatible license, real maintenance (or historical significance) and a niche the list actually needs. Every submission is researched before it lands.