Ghidra is an NSA-created software reverse engineering framework with disassembly, decompilation, graphing, and scripting for compiled code.
Lets normal Android apps call privileged system APIs through a server process started with adb or root privileges.
Runs a virtual iPhone on an Apple Silicon Mac using Apple's Virtualization.framework, for security research and debugging.
A kernel-based root solution for Android devices, providing su and root access management via a kernel module and manager app.
Scans git repos, files, and stdin for hardcoded secrets such as passwords, API keys, and tokens.
Open-source VPN app for circumventing censorship and improving privacy and speed across desktop and mobile platforms.
A collection of 70 cybersecurity projects with source code, certification roadmaps, and learning resources, organized from foundations to advanced.
Curated list and one-command installer for 750+ open-source intelligence and security tools across 50 categories.
Extensible HTTP/1-2-3 web server written in Go that obtains and renews TLS certificates automatically by default.
Magisk is a open-source root solution for Android that modifies the system at boot without altering the system partition.
Open-source scanner that finds vulnerabilities, misconfigurations, secrets, and SBOM data in containers, filesystems, git repos, VM images, and Kubernetes.
Android app that exploits CVE-2026-43499 to gain temporary root on supported kernels and load KernelSU.
Distributed security asset discovery platform covering subdomain enumeration, port scanning, vulnerability scanning, and page monitoring.
Backend APIs, SQL Server database, and Docker deployment tooling for the Bitwarden password manager clients.
A collection of security testing wordlists covering usernames, passwords, URLs, fuzzing payloads, web shells, and sensitive data patterns.
Claude Code skill that decompiles Android APK/XAPK/JAR/AAR files and extracts the HTTP APIs an app uses.
Kernel-based root solution for Android devices, forked from KernelSU with additional features and fixes.
Open-source, community-governed fork of HashiCorp Vault for storing, encrypting, and distributing secrets, certificates, and keys.
Scans repositories, filesystems, and chats for leaked credentials, then verifies whether each one is still live.
A rootless, semi-untethered jailbreak for iOS 15 through 26 devices, built on the Fugu15 exploit chain.
Open-source macOS cleaner, optimizer, and malware scanner built with Swift 6 and SwiftUI as a free alternative to CleanMyMac.
iOS app that permanently installs IPA files by exploiting a CoreTrust signature verification bug.
Open-source framework for developing, testing, and running exploit code against remote systems, with the msfconsole interactive interface.
Sandboxed execution system that runs untrusted code on Windows, Linux, and macOS using OS-native sandboxes or VMs behind one policy model.
A curated Markdown list of search engines for security work, covering servers, vulnerabilities, exploits, leaks, and threat intelligence.
Cross-platform app for capturing, inspecting, and rewriting HTTP(S) traffic on Windows, macOS, Linux, Android, and iOS.
Web platform for monitoring, patching and compliance-scanning Linux server fleets via outbound-only agents.
A community-written guide covering methods and test cases for security testing web applications and web services.
Open-source user-mode binary debugger for Windows, built for reverse engineering and malware analysis of executables without source.
General-purpose toolkit implementing TLS, DTLS, and QUIC protocols on top of a standalone cryptographic library and CLI.
eBPF-based networking, security, and observability layer for Kubernetes and other container platforms.
Containerized full-stack mail server bundling Postfix, Dovecot, Rspamd, and ClamAV for SMTP, IMAP, and POP3 with config-file-based setup.
Collection of ready-to-run vulnerable Docker Compose environments for security research, learning, and demonstration.
End-to-end encrypted messaging app and network that uses no user identifiers, with mobile, desktop and CLI clients.
A deliberately vulnerable PHP/MariaDB web app for practicing common web security flaws across adjustable difficulty levels.
Kernel-based root solution for Android devices, with a Kernel Patch Module (KPM) system for loadable kernel extensions.
Hosts a fake location-permission page that captures a smartphone's GPS coordinates and device details from a visitor who clicks through.
Modified kstuff-lite PS4 kernel-exploit toolkit (1.11-opt) that optimizes UELF/KELF transitions, FPU/CR0 handling, and adds opt-in diagnostics.
Official repository for the OWASP Top 10 document, a ranked list of the most critical web application security risks.
Archive of malware source code samples across many platforms and programming languages, organized by OS and language.
Specification and Scala tooling for the Code Property Graph, a language-agnostic representation of program code for analysis.
Reverse proxy that adds OAuth2 and OIDC authentication in front of web applications, supporting many identity providers.
A self-hostable pastebin that encrypts pastes in the browser with AES-256 so the server never sees plaintext.
Deployable vulnerable Active Directory lab environments for practicing pentest attack techniques.
Open-source static analysis engine that searches code for patterns and security issues, a fork of Semgrep under LGPL 2.1.
Chocolatey and Boxstarter install scripts that set up a Windows reverse engineering and malware analysis VM.
GUI, API and system management backend for the OPNsense open source firewall and routing platform based on FreeBSD.
Bash toolkit for bypassing Android lockscreens and running ADB, Metasploit payload, IP-logger and webcam-capture tasks against target devices.
Command-line web scanner that fingerprints websites to identify their CMS, servers, JavaScript libraries, and other technologies.
Open-source platform that builds code property graphs from source, bytecode, and binaries for querying vulnerabilities with a Scala DSL.
Official open source Android client for Tailscale, a WireGuard-based private mesh VPN network.
A C library implementing X.509 certificate handling and the TLS and DTLS protocols, with a small footprint for embedded systems.
Reusable, community-audited Solidity smart contract library with ERC20/ERC721 implementations and role-based access control.
Community payload library of DuckyScript keystroke-injection scripts for the Hak5 USB Rubber Ducky.
Docker image bundling Nginx reverse proxy, PHP support, Certbot for Let's Encrypt/ZeroSSL certificates, and fail2ban.
Open source silicon root of trust hardware, software, and tooling in a single monorepo, developed by lowRISC and partners.
Windows utility that bypasses ISP Deep Packet Inspection blocking of websites by manipulating outgoing HTTP and TLS traffic.
Web app for sharing passwords, text, files, and URLs via links that expire after a set number of views or time.
Community-maintained set of Microsoft Intune configuration baselines for Windows devices, built from CIS, NCSC, ACSC and Microsoft guidance.
Collection of optional add-on plugins for the OPNsense firewall distribution, installable from the firmware GUI.