Browse free open source Security software and projects for Mac and Linux below. Use the toggles on the left to filter open source Security software by OS, license, language, programming language, and project status.

  • Outgrown Windows Task Scheduler? Icon
    Outgrown Windows Task Scheduler?

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  • 1
    Web Security Dojo

    Web Security Dojo

    Virtual training environment to learn web app ethical hacking.

    Web Security Dojo is a virtual machine that provides the tools, targets, and documentation to learn and practice web application security testing. A preconfigured, stand-alone training environment ideal for classroom and conferences. No Internet required to use. Ideal for those interested in getting hands-on practice for ethical hacking, penetration testing, bug bounties, and capture the flag (CTF). A single OVA file will import into VirtualBox and VMware. There is also an Ansible script for those brave souls that want transform their stock Ubuntu into a virtual dojo. Bow to your sensei! username: dojo password: dojo
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    Downloads: 57 This Week
    Last Update:
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  • 2
    Bash Scripting

    Bash Scripting

    Free Introduction to Bash Scripting eBook

    This is an open-source introduction to Bash scripting guide/ebook that will help you learn the basics of Bash scripting and start writing awesome Bash scripts that will help you automate your daily SysOps, DevOps, and Dev tasks. No matter if you are a DevOps/SysOps engineer, developer, or just a Linux enthusiast, you can use Bash scripts to combine different Linux commands and automate boring and repetitive daily tasks, so that you can focus on more productive and fun things. The guide is suitable for anyone working as a developer, system administrator, or a DevOps engineer and wants to learn the basics of Bash scripting. The first 13 chapters would be purely focused on getting some solid Bash scripting foundations then the rest of the chapters would give you some real-life examples and scripts.
    Downloads: 4 This Week
    Last Update:
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  • 3
    ODS3 Virtual Machine Challenge

    ODS3 Virtual Machine Challenge

    Virtual Machine Image To Test Penetration Skills

    The ODS3 Virtual Machine Challenge are downloadable images that can be run as VMWare or VirtualBox instances. The Idea behind the challenge is to test and exercise web application penetration testing in a controlled environment. These images are great for cyber security students, penetration testers and hobbyist. Care should be taken if installed on an Internet access host as the application are purposely vulnerable to attack and exploitation.
    Downloads: 9 This Week
    Last Update:
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  • 4
    Vulnerable Operating Systems

    Vulnerable Operating Systems

    deliberately vulnerable operating systems

    VulnOS are a series of deliberately vulnerable operating systems packed as virtual machines to teach Offensive IT Security and to enhance penetration testing skills. For educational purposes!
    Downloads: 8 This Week
    Last Update:
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  • 5
    Jacksum

    Jacksum

    a free cross platform checksum utility, supports 58+ hash algorithms

    Development of this project has been moved to https://github.com/jonelo/jacksum. This site has been left for historical purposes ONLY, you find older Jacksum versions here. Please visit the GitHub site for current development. Jacksum 1.7.0 is a platform independent checksum utility (written entirely in Java) for computing and verifying (integrity check) checksums, CRC and hashes (fingerprints). It supports 58 popular hash algorithms and a lot of unique features.
    Downloads: 2 This Week
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  • 6
    BinaryCrypt

    BinaryCrypt

    Binary Conversion Calculator

    With BinaryCrypt, you can convert between regular text, binary, hexadecimal, octal decimal and decimal. You can convert only decimal (as of right now) to any base up to base 64. You can also save your converted text to a file or open a converted text file to decrypt the message, and perform basic arithmetic in binary. The git repo for the C# code is located at: https://github.com/m1r4g3/BinaryCrypt-.Net
    Downloads: 6 This Week
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  • 7

    Netviz

    Netviz is a Python app designed to monitor devices on the user's LAN.

    Netviz (short for NETwork VIsualiZer) is a Python program I cobbled together for a user to monitor devices on the user's LAN or a small section of the Internet. Essentially, it's a pretty interface for information on the MAC addresses and IPs of those devices. The range to search can be set either by the boundaries of the user's LAN using the "Find Range" button or through user-typed IPs. Also, there is a list of tracked MACs. If any of these tracked MACs appears on the LAN, the program shows the IP of this MAC.
    Downloads: 3 This Week
    Last Update:
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  • 8
    CryptoHelper is a Java program designed to aid in the decryption of classical ciphers, ie pre WWII ciphers. It brings together tools like frequency analysis, friedman tests, enciphering/deciphering for several clasical ciphers, and brute force algorithm
    Downloads: 2 This Week
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  • 9
    PureBasic Shamir Secret Sharing

    PureBasic Shamir Secret Sharing

    Open-source PureBasic implementation of the Shamir Secret Sharing

    PureBasic Shamir Secret Sharing is an open-source, self-contained and educational implementation of the Shamir Secret Sharing Scheme, written entirely in PureBasic. Shamir Secret Sharing is a cryptographic method that splits a secret into multiple parts (shares), such that any combination of at least T shares can reconstruct the original secret, while any number of shares fewer than T reveals no usable information. This implementation operates over the finite field GF(257), allowing correct handling of all byte values (0–255) without loss, making it compatible with any type of string or binary-compatible data. Main Features Complete implementation of Shamir Secret Sharing Arithmetic over GF(257) Compatible with all character strings Robust Lagrange interpolation Safe modular inverse computation Shares encoded in hexadecimal (3 characters per byte) Clear, well-commented source code ⚠️ Disclaimer This project is intended for educational and demonstration
    Downloads: 2 This Week
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  • Grafana: The open and composable observability platform Icon
    Grafana: The open and composable observability platform

    Faster answers, predictable costs, and no lock-in built by the team helping to make observability accessible to anyone.

    Grafana is the open source analytics & monitoring solution for every database.
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  • 10
    Common Hardware Recovery Solutions by Ukrainian-Russian network
    Downloads: 1 This Week
    Last Update:
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  • 11
    AUM CSPRNG & Stream Cipher

    AUM CSPRNG & Stream Cipher

    A minimal CSPRNG reflecting the Zen of cipher design

    AUM is an extremely fast, small-state, cryptographically secure pseudo-random number generator and stream cipher. AUM exhibits uniform distribution, mixes rapidly, has no detected bias, and comes in three variants: AUM16, with an internal state array of 16+4 32-bit words; AUM32, with an internal state of 32+4 words; and AUM64 with a 64+4-word state. The former permit seeding with a key of up to 512 or 1024 bits, the latter with a 2048-bit key.
    Downloads: 0 This Week
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  • 12
    Generic clustering/load-balancing platform (over a LAN or internet) using java based P2P Aorta workers that execute java "tasklets". Various tasklets can be implemented to solve fractals, process images, render webpages, crack RSA "brute force".
    Downloads: 0 This Week
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  • 13
    BEDBUG CSPRNG & Stream Cipher

    BEDBUG CSPRNG & Stream Cipher

    A family of FLEA-inspired CSPRNGs and Stream Ciphers

    BEDBUG is a small, fast, cryptographically secure pseudo-random number generator (CSPRNG) and stream cipher. It exhibits uniform distribution, mixes rapidly (with worst-case avalanche better than 16-bits), has no detected bias, and comes in three variants: BEDBUG128, with an internal state array of 128+3 32-bit words; BEDBUG256, with an internal state of 256+3 words; and BEDBUG512 with a 512+3-word state. The former permit seeding with a key of up to 4096 or 8192 bits, the latter with a 16384-bit key. The BEDBUG generator itself is a mere 5 lines of code: Three rotations; two pseudo-random lookups. The default BEDBUG configuration alternates the rotation constants unpredictably. These four sets of three values differ between BEDBUG128, BEDBUG256 and BEDBUG512 and were selected, tuned and tested in each case for optimal avalanche, which is never less than 16.5 bits. BEDBUG has passed stringent industry-standard tests for randomness, including NIST and DIEHARD.
    Downloads: 0 This Week
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  • 14
    Die Programme, die ich für meine Besondere Lernleistung im Fach Informatik zum Thema "Sicherheit steganografischer Systeme" schreibe.
    Downloads: 0 This Week
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  • 15
    CaesarCipher is a simple tool which helps you de/encrypt texts with the caesar cipher. This tool should not be used to encrypt sensitive data like passwords or personal information.
    Downloads: 0 This Week
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  • 16
    ConDEnSE (Confidential Data Enabled Statistical Exploration) will be a web-based environment for statistical analysis of confidential data from various database sources, based on Plone and R, and using the Jackknife method of confidentiality protection.
    Downloads: 0 This Week
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  • 17
    Cracker-ng

    Cracker-ng

    Cracker-ng is a multiple file password finder.

    /!\ Developer(s) needed to optimize routines, multi-processing; any kind of help is accepted :)
    Downloads: 0 This Week
    Last Update:
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  • 18
    CryptoToolsPack

    CryptoToolsPack

    Basic encode/decode, files comparison and protect sensitive data

    This pack includes the following: FCSG - generate checksum and perform file comparison; JCryptoTool - encrypt/decrypt messages and files; JWallet - password protect sensitive information. See Help menu in each application, Source code included.
    Downloads: 0 This Week
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  • 19
    Cryptography Workshop is a small yet powerful tool for cryptography and cryptanalysis. It's focused more on classic cryptography. It is currently in alpha and under development.
    Downloads: 0 This Week
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  • 20
    *** NEW PROJECT PAGE https://github.com/RandomStorm/DVWA
    Downloads: 0 This Week
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  • 21
    This is a project that simulates the German Military Enigma machine during WWII.. It is a project for beginers to learn to program and to meet people. If anyone is interested in helping, please email me @ dustin@rockhill.org
    Downloads: 0 This Week
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  • 22
    FroZenLight connects simple line art and mathematics. The source of light can be positioned so that either symmetric reflection patterns or secret messages (Cryptography) are created. Example light patterns and math exercises for education are provided.
    Downloads: 0 This Week
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  • 23
    Holynix
    Similar to the de-ice pentest CDs and pWnOS, Holynix is an Linux vmware image that was deliberately built to have security holes for the purposes of penetration testing. Visit http://pynstrom.com/forum/ for help setting up or completing the challenge.
    Downloads: 0 This Week
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  • 24
    ISC - The ISAAC Stream Cipher

    ISC - The ISAAC Stream Cipher

    ISC lets you encrypt & decrypt text and files of any type up to 4GB

    ISAAC is a cryptographically secure pseudo-random number generator (CSPRNG) and stream cipher. It was developed by Bob Jenkins from 1993-1996 and placed in the Public Domain. ISAAC is fast - especially when optimised - and portable to most architectures in nearly all programming and scripting languages. After more than 20 years of existence ISAAC has not been broken, and the little program you have here allows you to use it to encrypt and decrypt text of arbitrary length, files of any type, on a key-phrase of any complexity. ISC is a symmetric key encryption system, which means that both the sender and recipient of a message must possess the key.
    Downloads: 0 This Week
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  • 25
    InsecureWebApp is a web app that includes common web application vulnerabilities including SQL&Html Injection- see owasp.org. It is a target for automated and manual penetration testing, source code analysis, vulnerability assessments and threat modeling.
    Downloads: 0 This Week
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