Open Source Security Software - Page 8
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GnuPG
Complete and free implementation of the OpenPGP standard
GnuPG (GNU Privacy Guard) is a widely used free software encryption system that implements the OpenPGP standard to provide secure communication and data protection across multiple platforms. It uses a hybrid cryptographic approach combining symmetric encryption for performance with public-key cryptography for secure key exchange and identity verification. The software allows users to encrypt files and messages, create digital signatures, and manage cryptographic keys, making it a foundational tool for privacy-focused workflows. Because it is open source and licensed under the GNU GPL, GnuPG can be freely audited, modified, and redistributed, which has contributed to its adoption in security-sensitive environments. It is primarily command-line driven but can be integrated into email clients, messaging tools, and graphical front-ends for broader usability. -
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Shadowsocks for Android
A shadowsocks client for Android
Shadowsocks for Android is the Android client for the widely-used, high-performance encryption protocol project Shadowsocks. It is a secure socks5 proxy for Android that is designed to protect your internet traffic. Shadowsocks for Android allows you to surf the internet privately and securely at all times through your Android device. It features bleeding-edge techniques with Asynchronous I/O and Event-driven programming. It is completely free and open-source and is available for other platforms as well. -
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X Certificate and Key management is an interface for managing asymetric keys like RSA or DSA. It is intended as a small CA for creation and signing certificates. It uses the OpenSSL library for the cryptographic operations. Please see the XCA homepage http://hohnstaedt.de/xca
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kpcli
KeePass Command Line Interface
KeePass Command Line Interface (CLI) / interactive shell. Use kpcli to access and manage your KeePass databases from a Unix-like command line. It supports all version 1.x (*.kdb) and 2.x (*.kdbx) prior to the KDBX 4.0 update. -
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Instaloader
Download pictures (or videos) along with their captions
Instaloader is a mature open-source utility for downloading and archiving Instagram content along with rich metadata. It enables users to retrieve posts, stories, reels, highlights, profile pictures, and associated information such as captions, comments, timestamps, and geotags. The tool supports both public and permitted private content when proper authentication is provided, making it useful for research, digital archiving, and social media analysis. Instaloader can be run as a simple command-line tool or used programmatically through its Python module, offering flexibility for automation workflows. It includes smart update mechanisms that resume interrupted downloads and fetch only new media to maintain efficient archives. The project is widely adopted by investigators and analysts who need structured Instagram data collection. In essence, Instaloader provides a robust and highly configurable pipeline for Instagram content retrieval. -
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Shannon
Fully autonomous AI hacker to find actual exploits in your web apps
Shannon is an autonomous AI penetration testing system built to find and prove real, exploitable vulnerabilities in web applications rather than stopping at static warnings or best-guess alerts. It focuses on “proof by exploitation,” meaning it actively hunts for attack vectors in your code and then attempts to execute end-to-end exploits to demonstrate impact. The project blends source-aware analysis with automated web interaction so it can validate issues like injection flaws, authentication bypasses, and other exploitable paths in a way that resembles an actual attacker’s workflow. Instead of requiring you to manually reproduce findings, Shannon is designed to produce actionable evidence that a weakness can be weaponized, which helps teams prioritize what truly matters. It positions itself as a pre-attacker safety net, aiming to break your web app before someone else does and thereby reduce the gap between “potentially vulnerable” and “confirmed exploitable.” -
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Social-Analyzer
API, CLI, and Web App for analyzing and finding a person's profile
Social Analyzer is an open source OSINT tool that helps investigators discover and analyze a person’s presence across a very large number of social media platforms. It provides a unified API, CLI, and web interface capable of scanning hundreds or thousands of sites for username matches and related metadata. The project includes modular detection and analysis components that users can enable depending on their investigative needs. It is commonly used in cybersecurity, digital forensics, and reconnaissance workflows where identity correlation is required. Social Analyzer emphasizes flexibility, allowing integration into automated pipelines or manual investigations. Overall, the project functions as a powerful reconnaissance engine for mapping online identities at scale. -
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wpa-dictionary
WPA/WPA2 password dictionary for Wi-Fi password brute force cracking
wpa-dictionary is a Wi-Fi security wordlist repository focused on WPA and WPA2 password auditing. It collects several password dictionary files that can be used in authorized wireless security testing. The repository includes common password lists, English word material, birthday-pattern lists, and additional grouped text files. It also includes a small normalization script for preparing dictionary content. The README is written as a bilingual Chinese and English security-testing guide around Aircrack-ng-style workflows. Because the project is directly related to password cracking, it should only be used for networks the tester owns or is explicitly authorized to audit. -
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BeeCrypt is an ongoing project to provide a strong and fast cryptography toolkit. Includes entropy sources, random generators, block ciphers, hash functions, message authentication codes, multiprecision integer routines, and public key primitives.
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Algo VPN
Set of Ansible scripts that simplifies the setup of a personal VPN
Introducing Algo, a self-hosted personal VPN server designed for ease of deployment and security. Algo automatically deploys an on-demand VPN service in the cloud that is not shared with other users, relies on only modern protocols and ciphers, and includes only the minimal software you need. And it’s free. For anyone who is privacy conscious, travels for work frequently, or can’t afford a dedicated IT department, this one’s for you. Really, the paid-for services are just commercial honeypots. If an attacker can compromise a VPN provider, they can monitor a whole lot of sensitive data. Paid-for VPNs tend to be insecure: they share keys, their weak cryptography gives a false sense of security, and they require you to trust their operators. Even if you’re not doing anything wrong, you could be sharing the same endpoint with someone who is. In that case, your network traffic will be analyzed when law enforcement makes that seizure. -
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Block This
Free DNS based Ad Blocker for Android
Block This 3.1 is a free and open source ad blocker for Android that works in all apps and browsers! It provides the additional benefits of malware protection, increased browsing speed and reduction of mobile data traffic. Block all in-app and browser advertisements, including video and audio ads, popup ads, banners, tracking cookies. Block This takes care about your security with its antivirus features! We've included a large list of common malware distributors to keep you safe from viruses. According to our average estimates, by blocking all of the ads on your Android phone, you can save up to 35% of your data plan. Bypass your internet provider censorship and access parts of the web that were previously inaccessible for you. Block This is also Open source, which means that anyone can look at, read and suggest improvements to the code base. If you are a developer you can contribute by creating a pull request to our GitHub repository. -
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NExfil
Fast OSINT tool for discovering web profiles by username
NExfil is an open source OSINT (Open Source Intelligence) tool designed to locate user profiles across the web based on a given username. Developed in Python, the tool automates the process of checking hundreds of websites to determine whether a specific username exists on those platforms. By performing automated queries across numerous services, NExfil helps investigators, researchers, and security professionals quickly identify potential accounts associated with a particular username. The tool focuses on delivering results rapidly while minimizing false positives during the search process. Users can supply a single username, multiple usernames, or a file containing a list of usernames for bulk scanning. NExfil processes these inputs and attempts to detect matching profiles across more than 350 websites within seconds. Because it is command-line based and open source, it can be easily integrated into OSINT workflows and cybersecurity research environments. -
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OSIRIS
Open Source Global Intelligence Platform
OSIRIS is an open-source global intelligence platform for real-time situational awareness across multiple data domains. It is designed as a web dashboard that brings together aviation, maritime, CCTV, seismic, fire, weather, space, news, and cyber-related data into one interface. The project uses modern web technologies to render large numbers of entities visually and interactively on maps and dashboards. It positions itself as a transparent alternative to closed intelligence platforms by aggregating public and open-source feeds. Osiris is useful for analysts, researchers, journalists, and technical teams who need a unified view of fast-changing global events. Its main value is combining many OSINT streams into a single operational picture instead of forcing users to monitor separate tools. -
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Portainer.io
Making Docker and Kubernetes management easy
Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and ACI environments. It is designed to be as simple to deploy as it is to use. The application allows you to manage all your orchestrator resources (containers, images, volumes, networks and more) through a ‘smart’ GUI and/or an extensive API. Portainer consists of a single container that can run on any cluster. It can be deployed as a Linux container or a Windows native container. Portainer Business Edition builds on the open-source base and includes a range of advanced features and functions (like RBAC and Support) that are specific to the needs of business users. Portainer CE is an open source project and is supported by the community. You can buy a supported version of Portainer at portainer.io. -
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age
A simple, modern and secure encryption tool (and Go library)
age is a security-oriented tool and library by Filo Sottile. age is a simple, modern, secure encryption utility (and Go library) that emphasizes minimal configuration and strong defaults. It provides small explicit keys, no complex options, and is designed for UNIX-style composability; you can pipe into it, integrate it into scripts, etc. It supports a clearly defined format and promotes interoperability across implementations (there are Rust, TypeScript, etc). The project is well-suited for personal data encryption, backup use-cases, scripting encryption workflows, and embedding encryption in tools. Because of its design philosophy, it avoids the bloat of many older encryption utilities while maintaining strong cryptographic hygiene. It’s especially useful for developers or system administrators who want to adopt encryption without learning a multitude of options. -
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Msieve is a C library implementing a suite of algorithms to factor large integers. It contains an implementation of the SIQS and GNFS algorithms; the latter has helped complete some of the largest public factorizations known
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Pwgen is a small, GPL'ed password generator which creates passwords which can be easily memorized by a human.
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FreeOTFE
A free "on-the-fly" transparent disk encryption program for PC & PDAs.
An upstream source site housing the original files for this mirror is no longer available. With this software, you can create one or more "virtual disks" on your PC/PDA. These disks operate exactly like a normal disk, with the exception that anything written to one of them is transparently, and securely, encrypted before being stored on your computer's hard drive. -
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Kraken tool
Kraken: A multi-platform distributed brute-force password cracking
Kraken is an online distributed brute force password cracking tool. It allows you to parallelize dictionaries and crunch word generator-based cracking across multiple machines both as a web app in a web browser and as a standalone electron-based client. Kraken aims to be easy to use, fault-tolerant and scalable. Kraken is a dockerized application using docker-compose which will launch the db (Postgres), s3-compliant file storage (Minio), the server and the browser client. You can find the docker-compose file in the root directory of the repository. To upload password lists or dictionaries, upload them to Minio Console at localhost:9001. View the steps explained for a detailed guide Otherwise, you can generate word lists dynamically using crunch. Window EXE portable client needs to run in the folder with its hashcat dependencies. Hashcat files can be downloaded from their home page. -
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Laravel Sentinel
A framework agnostic authentication & authorization system
Sentinel is a PHP 8.1+ framework agnostic fully-featured authentication & authorization system. It also provides additional features such as user roles and additional security features. -
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OWASP Amass
In-depth attack surface mapping and asset discovery
The OWASP Amass Project has developed a tool to help information security professionals perform network mapping of attack surfaces and perform external asset discovery using open source information gathering and active reconnaissance techniques. The Open Web Application Security Project (OWASP) is a nonprofit foundation that works to improve the security of software. All of our projects ,tools, documents, forums, and chapters are free and open to anyone interested in improving application security. The volume argument allows the Amass graph database to persist between executions and output files to be accessed on the host system. The first field (left of the colon) of the volume option is the amass output directory that is external to Docker, while the second field is the path, internal to Docker, where amass will write the output files. -
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Proxyman
Web Debugging Proxy for macOS, iOS, and Android
Don't let cumbersome web debugging tools hold you back. With Proxyman's native macOS app, you can capture, inspect, and manipulate HTTP(s) traffic with ease. Intuitive, thoughtful, built with meticulous attention to detail. Comprehensive Guideline to set up with iOS simulator and iOS and Android devices. Proxyman acts as a man-in-the-middle server that capture the traffic between your applications and SSL Web Server. With built-in macOS setup, so you can inspect your HTTP/HTTPS Request and Responses in plain text with just one click. Narrow down your search with Proxyman's Multiple Filters. You can combine complex filtered criteria like Protocol, Content-Type, URL, Request Header, Response Header, Body, etc that find exact what you're looking for. -
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io-ts
Runtime type system for IO decoding/encoding
io-ts is a TypeScript runtime type system for decoding, validating, and encoding data at application boundaries. It solves a common TypeScript limitation: static types disappear at runtime, but external inputs still need to be checked safely. The library lets developers define codecs that represent both runtime validation logic and static TypeScript types. This approach is especially useful for APIs, configuration files, JSON payloads, database results, and any data that enters a program from an unknown source. io-ts integrates closely with functional programming patterns and the fp-ts ecosystem. Its main value is helping TypeScript applications keep runtime data validation aligned with compile-time type inference. -
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ntfy.sh
Send push notifications to your phone or desktop using PUT/POST
ntfy is a simple HTTP-based pub-sub notification service for sending push notifications to phones and desktops. It lets users publish messages to topics using basic HTTP requests, scripts, curl commands, or application integrations. The service can be used through the public ntfy.sh instance or self-hosted on private infrastructure. It is useful for server alerts, cron job results, monitoring notifications, CI/CD updates, and personal automation. ntfy includes web, mobile, and command-line clients, making it accessible across different environments. Its main value is providing lightweight, open-source notifications without forcing users into a heavy messaging platform or paid push service. -
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AirSnort is a wireless LAN (WLAN) tool which cracks encryption keys on 802.11b WEP networks. AirSnort operates by passively monitoring transmissions, computing the encryption key when enough packets have been gathered.
