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  1. tink-crypto/tink

    Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

    Java★ 13.5kApache-2.0archivedGitHub ↗

  2. beemdevelopment/Aegis

    A free, secure and open source app for Android to manage your 2-step verification tokens.

    Java★ 13.5kGPL-3.0GitHub ↗

  3. Tencent/secguide

    面向开发人员梳理的代码安全指南

    ★ 13.4kGitHub ↗

  4. 0x4m4/hexstrike-ai

    HexStrike AI MCP Agents is an advanced MCP server that lets AI agents (Claude, GPT, Copilot, etc.) autonomously run 150+ cybersecurity tools for automated pentesting, vulnerability discovery, bug bounty automation, and security research. Seamlessly bridge LLMs with real-world offensive security capabilities.

    Python★ 13.3kMITGitHub ↗

  5. OWASP/mastg

    The OWASP Mobile Application Security Testing Guide (MASTG) is a comprehensive manual for mobile app security testing and reverse engineering. It describes technical processes for verifying the OWASP Mobile Security Weakness Enumeration (MASWE) weaknesses, which are in alignment with the OWASP MASVS.

    Python★ 13.3kCC-BY-SA-4.0GitHub ↗

  6. projectdiscovery/nuclei-templates

    Community curated list of templates for the nuclei engine to find security vulnerabilities.

    JavaScript★ 13.3kMITGitHub ↗

  7. threat9/routersploit

    Exploitation Framework for Embedded Devices

    Python★ 13.3kGitHub ↗

  8. anchore/grype

    A vulnerability scanner for container images and filesystems

    Go★ 13.2kApache-2.0GitHub ↗

  9. drduh/YubiKey-Guide

    Community guide to using YubiKey for GnuPG and SSH - protect secrets with hardware crypto.

    HTML★ 13.1kMITGitHub ↗

  10. keeweb/keeweb

    Free cross-platform password manager compatible with KeePass

    HTML★ 13.0kGitHub ↗

  11. arkenfox/user.js

    Firefox privacy, security and anti-tracking: a comprehensive user.js template for configuration and hardening

    JavaScript★ 13.0kMITGitHub ↗

  12. libre-tube/LibreTube

    An alternative frontend for YouTube, for Android.

    Kotlin★ 12.9kGPL-3.0GitHub ↗

  13. google/oss-fuzz

    OSS-Fuzz - continuous fuzzing for open source software.

    Shell★ 12.9kApache-2.0GitHub ↗

  14. brannondorsey/wifi-cracking

    Crack WPA/WPA2 Wi-Fi Routers with Airodump-ng and Aircrack-ng/Hashcat

    ★ 12.7kMITGitHub ↗

  15. HackTricks-wiki/hacktricks

    Welcome to the page where you will find each trick/technique/whatever I have learnt in CTFs, real life apps, and reading researches and news.

    JavaScript★ 12.7kGitHub ↗

  16. secdev/scapy

    Scapy: the Python-based interactive packet manipulation program & library.

    Python★ 12.7kGPL-2.0GitHub ↗

  17. jopohl/urh

    Universal Radio Hacker: Investigate Wireless Protocols Like A Boss

    Python★ 12.6kGPL-3.0archivedGitHub ↗

  18. dstotijn/hetty

    An HTTP toolkit for security research.

    Go★ 12.5kMITGitHub ↗

  19. vanhauser-thc/thc-hydra

    hydra

    C★ 12.5kAGPL-3.0GitHub ↗

  20. future-architect/vuls

    Agent-less vulnerability scanner for Linux, FreeBSD, Container, WordPress, Programming language libraries, Network devices

    Go★ 12.3kGPL-3.0GitHub ↗

  21. nahamsec/Resources-for-Beginner-Bug-Bounty-Hunters

    A list of resources for those interested in getting started in bug bounties

    ★ 12.3kGitHub ↗

  22. jason5ng32/MyIP

    The best IP Toolbox. Check your IP address & geolocation, test IP for WebRTC and DNS IP leaks, run an IP quality check, browser fingerprint check, website availability check, network speed test, global latency test, MTR test, Whois search, and more.

    JavaScript★ 12.3kAGPL-3.0GitHub ↗

  23. majd/ipatool

    Command-line tool that allows you to search for iOS, iPadOS, tvOS, watchOS, visionOS, and macOS apps on the App Store, and download .ipa or macOS .pkg app packages.

    Go★ 12.1kMITGitHub ↗

  24. kubeshark/kubeshark

    eBPF-powered network observability for Kubernetes. Indexes L4/L7 traffic with full K8s context, decrypts TLS without keys. Queryable by AI agents via MCP and humans via dashboard.

    Go★ 12.1kApache-2.0GitHub ↗

  25. veracrypt/VeraCrypt

    Disk encryption with strong security based on TrueCrypt

    C★ 12.0kGitHub ↗

  26. k4m4/movies-for-hackers

    🎬 A curated list of movies every hacker & cyberpunk must watch.

    Shell★ 12.0kCC0-1.0GitHub ↗

  27. apsdehal/awesome-ctf

    A curated list of CTF frameworks, libraries, resources and softwares

    JavaScript★ 12.0kCC0-1.0GitHub ↗

  28. trimstray/test-your-sysadmin-skills

    A collection of Linux Sysadmin Test Questions and Answers. Test your knowledge and skills in different fields with these Q/A.

    ★ 11.9kMITGitHub ↗

  29. docker-archive-public/docker.labs

    This is a collection of tutorials for learning how to use Docker with various tools. Contributions welcome.

    PHP★ 11.9kApache-2.0archivedGitHub ↗

  30. gravitl/netmaker

    Netmaker makes networks with WireGuard. Netmaker automates fast, secure, and distributed virtual networks.

    Go★ 11.9kGitHub ↗

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