Open Source Windows Security Software

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

  • Gemini 3 and 200+ AI Models on One Platform Icon
    Gemini 3 and 200+ AI Models on One Platform

    Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

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  • Stop Storing Third-Party Tokens in Your Database Icon
    Stop Storing Third-Party Tokens in Your Database

    Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.

    Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.
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  • 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: 927 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: 3,046 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: 1,908 This Week
    Last Update:
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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: 44 This Week
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  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

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  • 5
    geowifi

    geowifi

    OSINT tool for locating WiFi networks using BSSID or SSID data

    geowifi is an open source OSINT tool designed to search and retrieve geolocation information about WiFi networks using their BSSID or SSID identifiers. It queries several public WiFi geolocation databases and aggregates the results to help identify the approximate location of a wireless access point. By combining multiple data sources such as Wigle, Apple, Google, WifiDB, Mylnikov, and Combain, the tool can provide location data that may include coordinates and additional network metadata. Users can run searches through a command-line interface by specifying either the BSSID (MAC address) or the SSID of a network. The results can be displayed in different formats, including a structured JSON output or an interactive HTML map showing the discovered locations. geowifi also supports API-based integrations with certain services, which allows geowifi to retrieve more accurate or detailed geolocation data when valid API credentials are configured.
    Downloads: 5 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: 19 This Week
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  • 7
    WhatBreach

    WhatBreach

    OSINT tool for discovering email addresses in known data breaches

    WhatBreach is an open source OSINT (Open Source Intelligence) tool designed to help users discover whether an email address has appeared in known data breaches. It simplifies the process of investigating compromised credentials by allowing users to search for a single email address or analyze multiple email addresses at once. It gathers breach information from various sources and APIs to identify where the email has been exposed in leaked databases or online paste sites. Once breaches are discovered, WhatBreach can provide additional context such as the databases associated with those leaks and any related paste dumps containing the email address. If the breach databases are publicly available, the tool can attempt to download them for further analysis. It also supports deeper investigation of email domains and related profiles, making it useful for researchers, security analysts, and penetration testers conducting reconnaissance or breach analysis.
    Downloads: 3 This Week
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  • 8
    Expand a TrueCrypt volume on the fly without reformatting. All kind of volumes (container files, disks and partitions) formatted with the NTFS file system are supported.
    Downloads: 13 This Week
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  • 9
    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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  • Forever Free Full-Stack Observability | Grafana Cloud Icon
    Forever Free Full-Stack Observability | Grafana Cloud

    Our generous forever free tier includes the full platform, including the AI Assistant, for 3 users with 10k metrics, 50GB logs, and 50GB traces.

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  • 10
    ClatScope

    ClatScope

    OSINT reconnaissance tool for IP, domain, email, and username lookups

    ClatScope is a Python-based OSINT (open source intelligence) utility designed to gather and analyze publicly available information from multiple online sources. It is primarily aimed at investigators, cybersecurity professionals, penetration testers, and researchers who need a centralized platform for reconnaissance tasks. It integrates with numerous public APIs and internet services to retrieve detailed data about IP addresses, domains, email addresses, phone numbers, usernames, and other digital identifiers. By combining these sources, ClatScope automates the process of collecting intelligence that would normally require multiple separate tools or manual searches. It operates through a menu-driven command line interface that allows users to choose from many reconnaissance functions and receive formatted results directly in the terminal. ClatScope supports dozens of OSINT operations, including domain analysis, breach checks, and account discovery.
    Downloads: 2 This Week
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  • 11
    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: 8 This Week
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  • 12
    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: 16 This Week
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  • 13
    Base64encoder

    Base64encoder

    Convert files to Base64!

    Simple way to encode files and images in base64... Tutorial: http://www.youtube.com/watch?v=G1cQXnzOwcs
    Downloads: 15 This Week
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  • 14
    Full Stack Computer Scanner

    Full Stack Computer Scanner

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

    The Full Stack Computer Scanner is a read-only Windows freeware security diagnostics app for computer platform awareness. No ads. No accounts. No data collection. Fully offline. Complements AVs by scanning for hardware, software, network integrity, and dangerous malware signatures. Only binaries from this official SourceForge project page are legitimate. Other hosting, web, cloud, virtualization, or “run online” instances are unauthorized. Trust your vendors but verify with the Full Stack Computer Scanner. Keith Johnson | KCJ Tech Solutions | 30 Years of IT Experience Not sure whether your computer is secure? Contact: fullstackcomputerscanner@gmail.com. Optional 20-Minute Computer Health Check: $40 USD. Optional Computer Health Check + Written Report: $80 USD. Practical next steps. No remote access. Chat/conversation only. For Individuals 21+. Project donations welcome. Thank you in advance. bc1qz259yr4q89r0669zm9mrvs2trkyw0z4kazzx0n
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    Downloads: 10 This Week
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  • 15
    Hercules_free_version

    Hercules_free_version

    Almacenamiento seguro offline para semillas BIP39 con cifrado avanzado

    HERCULES Crypto Pendrive es una aplicación diseñada para proteger tus semillas de criptomonedas (BIP39) de forma segura y totalmente offline. A diferencia de métodos tradicionales como papel, notas digitales o almacenamiento en la nube, esta solución elimina la exposición a internet, reduciendo significativamente el riesgo de hackeos, malware o accesos no autorizados. El software utiliza cifrado avanzado para garantizar que tu información permanezca protegida en todo momento. Su funcionamiento es sencillo e intuitivo, pensado tanto para usuarios técnicos como para inversores que buscan máxima seguridad sin complicaciones. HERCULES no se conecta a la red, no accede a tus fondos y no requiere datos personales, lo que garantiza privacidad total. “Software firmado digitalmente con certificado de firma de código de SSL.com.” File signed with certificate: Owner: Wladimir Marino Materan Velasquez SerialNumber: 107926026636172561193259228594730909048
    Downloads: 14 This Week
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  • 16
    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: 6 This Week
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  • 17
    LOIC

    LOIC

    LOIC TCP/IP Stresser v1.1.0.1 By LifeOwner

    LOIC TCP/IP Stresser Tool History I was downloaded the original LOIC within version 1.0.8.0 and changed it to be better without changing the other functions which were worked nice. The grey skin i hope you like it! Reworked by LifeOwner. New Features Work • The UDPV2 work like charm with low builded connections you might get timeout in your internet connection might cause you're too slow. (I tested it with 25MB's Downstream/ 2MB's Upstream). • The status checker function will be slowly when the ip->port will be offline, so do not worry the program still running and working on it, just the timeout is bigger than usually to make sure it will works for slower connections. Have fun with it i hope you will like it! New build by LifeOwner 2016.
    Downloads: 18 This Week
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  • 18
    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: 9 This Week
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  • 19
    aBLhackPsw

    aBLhackPsw

    aBLhackPsw v7.0 - Password recovery tool

    Now with aBLhackPsw v7.0 you can see the password in x32 and x64 programs !!! aBLhackPsw v7.0 run on Wondows 11 !!! aBLhackPsw is a password recovery tool - utility for recovering forgotten or lost password. With this program you can see asterisks ***** password from ***** fields (Outlook Express, Total Commander (FTP) and other programs). There is no illegal password hacking technique involved, it only reads or uncovers hidden password character that are covered by asterisks. This program don't need to install. You can to write into flash device or the others devices and work with program with the others computers. Multilingual User Interface (English, Lithuanian, Russian) Work on Windows (x32/x64) 98/ME/NT/2000/2003/XP/VISTA/2008/Windows 7/8/10/11
    Downloads: 7 This Week
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  • 20
    Blockpost plugin for Agnitum Outpost Firewall. Every IP-packet from or to IP address in "Restricted Zone" list to be dropped/rejected. Good for p2p spyware blocking.
    Downloads: 6 This Week
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  • 21
    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: 9 This Week
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  • 22
    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: 2 This Week
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  • 23
    Mixmaster is an anonymous remailer. Remailers provide protection against traffic analysis and allow sending electronic mail anonymously or pseudonymously. Mixmaster consists of both client and server installations.
    Downloads: 7 This Week
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  • 24
    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: 6 This Week
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  • 25
    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: 6 This Week
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