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

  • Gen AI apps are built with MongoDB Atlas Icon
    Gen AI apps are built with MongoDB Atlas

    The database for AI-powered applications.

    MongoDB Atlas is the developer-friendly database used to build, scale, and run gen AI and LLM-powered apps—without needing a separate vector database. Atlas offers built-in vector search, global availability across 115+ regions, and flexible document modeling. Start building AI apps faster, all in one place.
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  • Yeastar: Business Phone System and Unified Communications Icon
    Yeastar: Business Phone System and Unified Communications

    Go beyond just a PBX with all communications integrated as one.

    User-friendly, optimized, and scalable, the Yeastar P-Series Phone System redefines business connectivity by bringing together calling, meetings, omnichannel messaging, and integrations in one simple platform—removing the limitations of distance, platforms, and systems.
    Learn More
  • 1
    Tor Browser

    Tor Browser

    Browser for using Tor on Windows, Mac OS X or Linux

    Tor Browser enables you to use Tor on Windows, Mac OS X, or Linux without needing to install any software. Tor is a software that bounces your communications around a distributed network of relays run by volunteers. This effectively prevents anyone watching your Internet connection from learning what sites you visit; it prevents the sites you visit from learning your physical location; and allows you access to sites which are blocked. Tor Browser can run off a USB flash drive, comes with a pre-configured web browser to protect your anonymity, and is self-contained (portable).
    Downloads: 1,041 This Week
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  • 2
    waircut

    waircut

    WPS wireless protocol audit software for Windows

    Wireless Air Cut is a WPS wireless, portable and free network audit software for Ms Windows. It is used to check the security of our wps wireless networks and to detect possible security breaches. You can check if the router has a generic and known wps pin set, if it is vulnerable to a brute-force attack or is vulnerable to a Pixie-Dust attack. You can see the Installation instructions on Wiki. ------- Wireless Air Cut es un software de auditoria del protocolo WPS en redes wireless, portable, libre y gratuito para Ms Windows. Sirve para comprobar la seguridad WPS de nuestras redes wireless y detectar posibles brechas de seguridad. Puede comprobar si el router tiene establecido un pin wps genérico y conocido, si es vulnerable a un ataque por fuerza bruta o si es vulnerable a un ataque Pixie-Dust. Ver Instrucciones de instalación en la wiki.
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    Downloads: 3,479 This Week
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  • 3
    VeraCrypt

    VeraCrypt

    Open source disk encryption with strong security for the Paranoid

    VeraCrypt is a free disk encryption software brought to you by IDRIX (https://www.idrix.fr) and based on TrueCrypt 7.1a. It adds enhanced security to the algorithms used for system and partitions encryption making it immune to new developments in brute-force attacks. It also solves many vulnerabilities and security issues found in TrueCrypt. This enhanced security adds some delay ONLY to the opening of encrypted partitions without any performance impact to the application use phase. This is acceptable to the legitimate owner but it makes it much harder for an attacker to gain access to the encrypted data. All released files are PGP signed with key ID=0x680D16DE, available on key servers and downloadable at https://www.idrix.fr/VeraCrypt/VeraCrypt_PGP_public_key.asc VeraCrypt can mount TrueCrypt volumes. It also can convert them to VeraCrypt format. Documentation: https://www.veracrypt.fr/en/Documentation.html FAQ : https://www.veracrypt.fr/en/FAQ.html
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    Downloads: 2,030 This Week
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  • 4
    TeamPass

    TeamPass

    cPassMan was renamed to TeamPass

    TeamPass is a collaborative passwords manager. It has been created for managing passwords in a collaborative environment of use such as companies. With TeamPass it is possible to organize passwords in a tree structure, associate information to password. MORE INFORMATION ON TEAMPASS.NET website!
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    Downloads: 74 This Week
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  • All-in-One Inspection Software Icon
    All-in-One Inspection Software

    flowdit is a connected worker platform tailored for industry needs in commissioning, quality, maintenance, and EHS management.

    Optimize Frontline Operations: Elevate Equipment Uptime, Operational Excellence, and Safety with Connected Teams and Data, Including Issue Capture and Corrective Action.
    Learn More
  • 5
    Full Stack Computer Scanner

    Full Stack Computer Scanner

    Scans the entire computer device "stack" (hardware, software, comms)

    The FULL STACK COMPUTER SCANNER is a proprietary FREEWARE Windows system diagnostics tool designed to help users assess a computer’s overall security posture. The application performs read-only analysis across 50 system sectors, including hardware, firmware, boot, OS configuration, software, files, browser extensions, and network-related indicators. The scanner does not remove, block, quarantine, or modify anything. This is the initial 2026 public release of a transparency-first diagnostic tool focused on visibility, awareness, and education, rather than automated remediation. The project includes the application, full documentation, architecture disclosure, and detailed explanations of each scan area. Proprietary Freeware (not open source). See Freeware License 2026.txt for full terms. Optional independent written diagnostic reports are available for users who want professional interpretation of results. KCJ Tech Solutions Email Contact: computerscannerapp@gmail.com
    Downloads: 58 This Week
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  • 6
    PortableSigner
    PortableSigner is a tool for digital signing (with X.509 certificates) of PDF files
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    Downloads: 17 This Week
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  • 7
    Base64encoder

    Base64encoder

    Convert files to Base64!

    Simple way to encode files and images in base64... Tutorial: http://www.youtube.com/watch?v=G1cQXnzOwcs
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    Downloads: 21 This Week
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  • 8
    Another Backup Plugin (ABP) is a plugin for the KeePass password manager (Classic Edition). ABP automatically copies the initial password database to one or more backup files, so that the passwords can be recovered in case of loss.
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    Downloads: 55 This Week
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  • 9
    ngrep strives to provide most of GNU grep's common features,applying them to the network layer. ngrep is a pcap-aware tool that will allow you to specify extended regular expressions to match against data payloads of packets. SUPPORT/REPORTING BUGS: please use https://github.com/jpr5/ngrep/issues Thank you!
    Downloads: 19 This Week
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  • Infor M3 ERP Icon
    Infor M3 ERP

    Enterprise manufacturers and distributors requiring a solution to manage and execute complex processes

    Efficiently executing the complex processes of enterprise manufacturers and distributors. Infor M3 is a cloud-based, manufacturing and distribution ERP system that leverages the latest technologies to provide an exceptional user experience and powerful analytics in a multicompany, multicountry, and multisite platform. Infor M3 and related CloudSuite™ industry solutions include industry-leading functionality for the chemical, distribution, equipment, fashion, food and beverage, and industrial manufacturing industries. Staying ahead of the competition means staying agile. Our new capabilities bring improved data-driven insights and streamlined workflows to help you make informed decisions and take quick action.
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  • 10
    VPLE

    VPLE

    Vulnerable Pentesting Lab Environment

    VPLE (Linux) Vulnerable Pentesting Lab Environment VPLE is an Intentionally Vulnerable Linux Virtual Machine. This VM can be used to conduct security training, test security tools, and practice common penetration testing Labs. In VPLE bunch of labs are Available. NOTE:- "Only run in VMWare Pls Don’t run in VirtualBox" The default login and password is administrator: password. List Of All Labs in one VM:- 1. Web-DVWA 2. Mutillidae 3. Webgoat 4. Bwapp 5. Juice-shop 6. Security-ninjas 7. WordPress We are adding more labs in few days🤗
    Downloads: 29 This Week
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  • 11
    WiKID Two-Factor Authentication System

    WiKID Two-Factor Authentication System

    Two-factor authentication system

    The WiKID Strong Authentication System is a public-key based two-factor authentication system. It is a flexible, extensible, and secure alternative to tokens, certs and passwords. Application & API support exists for Java, ASP, PHP, Ruby, OpenVPN, TACACS+, etc. Read our eGuide on how to setup your network with two-factor authentication: http://www.wikidsystems.com/learn-more/two-factor-authentication-white-papers
    Downloads: 14 This Week
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  • 12
    CSZ CMS

    CSZ CMS

    CSZ CMS is a open source content management system. With Codeigniter.

    CSZ CMS is an open source web application that allows to manage all content and settings on the websites. CSZ CMS was built on the basis of Codeigniter and design the structure of Bootstrap, this should make your website fully responsive with ease. CSZ CMS is based on the server side script language PHP and uses a MySQL or MariaDB database for data storage. CSZ CMS is open-source Content Management System. And all is free under the Astian Develop Public License (ADPL).
    Downloads: 9 This Week
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  • 13
    RetroShare

    RetroShare

    [WARNING] Project has moved to http://github.com/Retroshare/Retroshare

    [IMPORTANT] Retroshare is now distributed on Github. Please go to http://retroshare.net to find the latest releases and sources. RetroShare is a cross-platform, secured and decentralized communication system. It lets you to securely chat, share photos, videos, and more with family and friends, using OpenPGP to authenticate peers and OpenSSL to encrypt all communication.
    Downloads: 5 This Week
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  • 14
    CyberGod KSGMPRH

    CyberGod KSGMPRH

    Open-Source antivirus for Windows

    This is an effective tool which is capable of detecting thousands and thousands of malware in your PC, including the shortcut virus to nasty ransomware, The database is regularly updated. See the video for how to use this tool. Version: 1.3 MD5: 707D4BE2AA4547A542A7EEFDB7BC4C4D SHA-1: 899B80928DF59C5745B56480DAA6A51E7F65CB18A4 Source code MD5: 38B3A08D62E7ADD2EE30FCA375207499 IMPORTANT: =========== FULL VERSION : https://sourceforge.net/projects/cybergod-ksgmprh/ NOTE: ===== If this tool has helped you consider supporting it please http://bit.ly/supportCyberGodKSGMPRH via paypal http://bit.ly/CyberGodSecurityDonate
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    Downloads: 4 This Week
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  • 15
    wolfSSL
    The wolfSSL embedded SSL library (formerly CyaSSL) is a lightweight, portable, C-language-based SSL/TLS library targeted at IoT, embedded, and RTOS environments primarily because of its size, speed, and feature set. It works seamlessly in desktop, enterprise, and cloud environments as well. wolfSSL supports industry standards up to the current TLS 1.2 and DTLS 1.2, is up to 20 times smaller than OpenSSL, offers a simple API, an OpenSSL compatibility layer, OCSP and CRL support, is backed by the robust wolfCrypt cryptography library, and much more. wolfSSL relies on the FIPS 140-2 validated wolfCrypt library for all cryptographic functionality. Visit http://wolfssl.com/wolfSSL/fips.html for more info!
    Downloads: 11 This Week
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  • 16
    PVPLE
    VPLE (Linux) Vulnerable Pentesting Lab Environment VPLE is an Intentionally Vulnerable Linux Virtual Machine. This VM can be used to conduct security training, test security tools, and practice common penetration testing Labs. In VPLE bunch of labs are Available. NOTE:- "Only run in VMWare Pls Don’t run in VirtualBox" Will also run on the ProxMox server to understand how to do it pls refer to the doc in the zip named "Cybersecurity Lab Deployment on Proxmox" The default login and password is administrator: password. List Of All Labs in one VM:- 1. Web-DVWA 2. Mutillidae 3. Webgoat 4. Bwapp 5. Juice-shop 6. Security-ninjas 7. WordPress We are adding more labs in few days
    Downloads: 6 This Week
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  • 17
    E-mail Spoofer is a tool designed for penetration testers who need to send phishing e-mails. It allows to send mails to a single recipient or a list, it supports plain text/html email formats, attachments, templates and more... Update Version 1.1: =============== * Added text conversion to Homographs for bypassing spam filters. (based on http://www.exploit-db.com/wp-content/themes/exploit/docs/20114.pdf) * Added Reply-To header * Added Sender Name Field * Added Built in User Agent * Detailed error log If you find this tool useful crypto currency donations are welcome: Bitcoin: 1Kksc9b4WZ5X36xGDgpodPVpBSozMje6ui Litecoin: LQ1JCMxo122FpJ8iKX7HsrNtjCacpTkkFW
    Downloads: 5 This Week
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  • 18
    USBRescueX

    USBRescueX

    Rescue and clean your hard disk or USB memory, delete broken shortcuts

    USBRescuex in its version 2.1 is a computer program category in utility software for files and folders, which its main function is the recovery of hidden files, read-only and corrupted our device (either USB memory devices, removable storage or hard disk). Besides recover those important files for you , eliminates the famous RECYCLER virus , which is the basis of other USB flash drives for viruses , this virus is the main wrongdoer in your USB/Storage Device/Device Storage space Removable memory/disk hard, as the virus will hide all your files and folders , creating false shortcuts and reproducing more viruses to your computer and other USB/removable Devices/Hard Drives storage. The USBRescueX is a lightweight program easy to use and takes up very little space in your computer memory , and is portable version, optimized to run on any windows operating system than Windows XP or higher .
    Downloads: 8 This Week
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  • 19
    NOTE: dkim-milter has been replaced by OpenDKIM, available at http://opendkim.org/ dkim-milter consists of two parts: A milter-based application (dkim-filter) which plugs in to Sendmail to provide DomainKeys Identified Mail service, and a library (libdkim) which can be used to build DKIM-compliant applications or MTAs.
    Downloads: 4 This Week
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  • 20
    Razorback
    Project Razorback(tm). A framework for detection.
    Downloads: 3 This Week
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  • 21
    SafeNotes - Encrypted Journaling

    SafeNotes - Encrypted Journaling

    SafeNotes - A encrypted and easy-to-use journaling application

    SafeNotes is an encrypted and user-friendly note-taking application designed to keep your personal notes and journal entries safe and organized. With SafeNotes, you can easily create, edit, and manage your notes, all while ensuring your data is protected through robust AES-256 encryption and password hashing. The app features a sleek and intuitive interface built with MaterialSkin, offering light and dark themes to suit your preferences. SafeNotes is perfect for anyone looking to keep their notes and journal entries secure and organized. Download SafeNotes today and experience the peace of mind of knowing your personal information is safe.
    Downloads: 3 This Week
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  • 22
    C-Total

    C-Total

    Control Total sobre las conecciones de RED

    Administra reglas del Firewall de Windows de forma transparente sin ocultar información, muestra reglas creadas por el sistema y cualquier programa que utilice internet. NOTA: Para crear reglas y/o eliminarlas debe ejecutar C-Total como administrador.
    Downloads: 5 This Week
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  • 23
    Leo Folder Locker

    Leo Folder Locker

    Freeware folder locking utility to lock your important data.

    Leo Folder Locker is a free/freeware folder locking software specially designed for those who want to secure there important data in just a simple folder.This folder locker software creates a secure folder user puts its important stuff in it and then that folder is locked down so that no one can access your data.It is a easy to use CLI based software. Note :: Please make sure that you have unlocked all locked folders before reinstalling Windows or else you might face data loss.
    Downloads: 5 This Week
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  • 24
    UFOWardriving

    UFOWardriving

    UFO Wardriving è un software studiato per trovare le password wifi

    UFO Wardriving homepage: www.thc-scripting.it La versione per Windows è possibile trovarla nella homepage o su softonic UFO Wardriving è un software che contiene gli algoritmi di generazione della password dei router: *Alice *DLink *Fastweb *Huawei *Infostrada *Jazztel_ *WLAN_ *Speedtouch *Thomson *INFINITUM *Discus- *Discus-- *BBox *BTHomeHub *Otenet *Sapo *Dmax *Orange *Cyta *Privat *BigPond *Meo *O2Wireless *TeleTu *Tele2 *YaCom *WLAN *WiFi Riesce a trovare la maggior parte delle password di questi router wifi, inoltre ha uno scanner wlan per recuperare ulteriori informazioni dalle reti (mac, ssid, tipo di rete, autenticazione...) Potete tenervi aggiornati e scaricarlo da qua: http://www.thc-scripting.it/05/07/2012/ufo-wardriving-trovare-le-password-dei-router-wifi-con-2-click/
    Downloads: 5 This Week
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  • 25
    G Security Windows Locker

    G Security Windows Locker

    A smart, secure, advance and easy to use desktop locker for Windows.

    G Security is an easy to use Desktop locker/Screen locker developed for Microsoft Windows. It allows a user to securely lock down Windows in such a way that it cannot be accessed by an unauthorized user. G Security is light and easy to use with a highly user friendly interface. It prevents anyone from accessing your computer when its locked down so that your private data stored on the computer cannot be accessed by anyone. It completely locks down your computer so that even if someone gets a hold of your computer, he or she can do nothing on it. It can lock down your computer on start up as well as any time you want just by pressing some keys. Once the computer is locked down shortcut keys will not work at all. The Ctrl+Alt+Del screen will also be secured in such a way that no one can unlock you computer without correct password. Any running application will also be prevented from messing up with the locked computer. It can be used by multiple users at a time.
    Downloads: 4 This Week
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