Open Source Windows Security Software
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Security Software for Windows
View 1373 business solutionsBrowse 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.
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KeePass
A lightweight and easy-to-use password manager
KeePass Password Safe is a free, open source, lightweight, and easy-to-use password manager for Windows, Linux and Mac OS X, with ports for Android, iPhone/iPad and other mobile devices. With so many passwords to remember and the need to vary passwords to protect your valuable data, it’s nice to have KeePass to manage your passwords in a secure way. KeePass puts all your passwords in a highly encrypted database and locks them with one master key or a key file. As a result, you only have to remember one single master password or select the key file to unlock the whole database. And the databases are encrypted using the best and most secure encryption algorithms currently known, AES and Twofish. See our features page for details. -
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Scrollout F1
An easy-to-use anti-spam email gateway
• Designed for Linux and Windows email system administrators, Scrollout F1 is an easy to use, already adjusted email firewall (gateway) offering free anti-spam and anti-virus protection aiming to secure existing email servers, old or new, such as Microsoft Exchange, Lotus Domino, Postfix, Exim, Sendmail, Qmail and others. • Built-in multilayer security levels make configuration effort equal to a car radio. • It combines simplicity with effective protection using powerful open source with additional set of rules & filters. • Available as 64bit: - ISO image (Internet connection required during installation) - install from scratch (Internet connection required during installation). • Minimum Requirements (for 5,000 messages/day): 1 GB of RAM 30 GB storage drive 1 Processor x86/AMD64 1 Ethernet x 1 IPv4 address UDP ports: 53 123 4500 6277 24441 TCP ports: 25 80 443 2703 -
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WinSCP
WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
WinSCP is a popular free SFTP and FTP client for Windows, a powerful file manager that will improve your productivity. It offers an easy to use GUI to copy files between a local and remote computer using multiple protocols: Amazon S3, FTP, FTPS, SCP, SFTP or WebDAV. WinSCP can copy files between two local folders too. Power users can automate WinSCP using .NET assembly. WinSCP is available in English and many other languages. -
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Anti-Spam SMTP Proxy Server
Anti-Spam SMTP Proxy Server implements multiple spam filters
The Anti-Spam SMTP Proxy (ASSP) Server project aims to create an open source platform-independent SMTP Proxy server which implements auto-whitelists, self learning Hidden-Markov-Model and/or Bayesian, Greylisting, DNSBL, DNSWL, URIBL, SPF, SRS, Backscatter, Virus scanning, attachment blocking, Senderbase and multiple other filter methods. Click 'Files' to download the professional version 2.8.1 build 24226. A linux(ubuntu 20.04 LTS) and a freeBSD 12.2 based ready to run OVA of ASSP V2 are also available for download. NOTICE: V1 development has been stopped at the end of 2014 (1.10.1 build 16060). Possibly there will be done some bugfixing in future. Please upgrade to V2, which is and will be actively maintained. -
ChangeGear provides IT staff with the functions required to manage everything from ticketing to incident, change and asset management and more. ChangeGear includes a virtual agent, self-service portals and AI-based features to support analyst and end user productivity.
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Safe Exam Browser is a webbrowser-environment to carry out online-exams safely. The software changes any computer into a secure workstation. It regulates the access to any utilities and prevents students from using unauthorised resources.
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Process Hacker
View and manage processes, services and more with this powerful tool.
Process Hacker is a free and open source process viewer. This multi-purpose tool will assist you with debugging, malware detection and system monitoring. -
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x64dbg
An open-source x64/x32 debugger for windows.
An open-source x64/x32 debugger for windows. Development is done on GitHub (https://github.com/x64dbg/x64dbg). Daily snapshots are uploaded here, snapshots for every commit can be found on http://releases.x64dbg.com -
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System Informer
View and manage processes, services and more with this powerful tool
System Informer is a free and open source process viewer. This multi-purpose tool will assist you with debugging, malware detection and system monitoring. -
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Eraser
A security tool to remove sensitive data from your Windows hard drive
Eraser is a secure data removal tool for Windows. It completely removes sensitive data from your hard drive by overwriting it several times with carefully selected patterns. -
Discover and manage administrator, service, and web app passwords, keys, and identities. Automate management with approval workflows. Centrally control, audit, monitor, and record all access to critical IT assets.
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Metasploitable
Metasploitable is an intentionally vulnerable Linux virtual machine
This is Metasploitable2 (Linux) Metasploitable is an intentionally vulnerable Linux virtual machine. This VM can be used to conduct security training, test security tools, and practice common penetration testing techniques. The default login and password is msfadmin:msfadmin. Never expose this VM to an untrusted network (use NAT or Host-only mode if you have any questions what that means). To contact the developers, please send email to msfdev@metasploit.com -
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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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ophcrack
A Windows password cracker based on rainbow tables
Ophcrack is a Windows password cracker based on a time-memory trade-off using rainbow tables. This is a new variant of Hellman's original trade-off, with better performance. It recovers 99.9% of alphanumeric passwords in seconds. -
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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). -
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Darik's Boot and Nuke
A hard drive disk wipe and data clearing utility
Darik's Boot and Nuke ("DBAN") is a self-contained boot image that securely wipes hard disk drives (HDDs). DBAN is appropriate for personal use, bulk data destruction, or emergency data destruction for HDDs, but is not recommended for solid-state drives (SSDs), sanitization that requires auditable compliance documentation, or technical support. -
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ClamWin
Antivirus software with virus scanning and virus definition updates
Looking for free Open Source Antivirus for Windows? Download ClamWin Free Antivirus and get free virus scanning and free virus definition updates. Free Antivirus software for Windows, using the well-respected ClamAV scanning engine. Includes virus scanner, scheduler, virus database updates, context menu integration to MS Windows Explorer and Add-in to MS Outlook. Also features easy setup program. -
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LOIC
A network stress testing application
Low Orbit Ion Cannon. The project only keeps and maintains (bug fixing) the code written by the original author - Praetox, but is not associated or related to it. DISCLAIMER: USE ON YOUR OWN RISK. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER OR CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES. -
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Angry IP Scanner
A cross-platform network scanner that is fast and simple to use
Angry IP scanner is fast and friendly network scanner for Windows, Linux, and Mac. It is very extensible, allowing it to be used for very wide range of purposes, with the primary goal of being useful to network administrators. -
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DVWA
PHP/MySQL web application
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is damn vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, help web developers better understand the processes of securing web applications and aid teachers/students to teach/learn web application security in a classroom environment. The aim of DVWA is to practice some of the most common web vulnerabilities, with various levels of difficulty, with a simple straightforward interface. Please note, there are both documented and undocumented vulnerabilities with this software. This is intentional. You are encouraged to try and discover as many issues as possible. Damn Vulnerable Web Application is damn vulnerable! Do not upload it to your hosting provider's public html folder or any Internet facing servers, as they will be compromised. It is recommended using a virtual machine (such as VirtualBox or VMware), which is set to NAT networking mode. -
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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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BleachBit
deletes junk files to free disk space and improve privacy
BleachBit frees disk space and maintains privacy. Cleans cache, Internet history, temporary files, logs, cookies, Firefox, Google Chrome, Flash, Windows, Linux, and more. Downloads are at www.bleachbit.org and source code is at GitHub. -
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RHash (Recursive Hasher) is a console utility for computing and verifying hash sums of files. It supports CRC32, CRC32C, MD4, MD5, SHA1, SHA256, SHA512, SHA3, AICH, ED2K, DC++ TTH, BTIH, Tiger, GOST R 34.11-2012, RIPEMD-160, HAS-160, EDON-R, and Whirlpool.
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mcrypt, and the accompanying libmcrypt, are intended to be replacements for the old Unix crypt, except that they are under the GPL and support an ever-wider range of algorithms and modes.
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mimikatz
A little tool to play with Windows security
mimikatz is a tool that makes some "experiments" with Windows security. It's well-known to extract plaintexts passwords, hash, PIN code and kerberos tickets from memory. It can also perform pass-the-hash, pass-the-ticket or build Golden tickets; play with certificates or private keys, vault and more. -
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Shadowsocks for Windows
A secure socks5 proxy for Windows
Shadowsocks for Windows is a free and open source, high-performance secured socks5 proxy designed to protect your internet traffic. It allows you to surf the web privately and securely, and offers a number of useful features such as HTTP proxy support, system proxy configuration, server auto switching and plugin support. Shadowsocks is incredibly fast, as it utilizes bleeding edge techniques with Asynchronous I/O and event-driven programming. It also has a flexible industry-level encryption algorithm that supports custom algorithms. Shadowsocks for Windows requires a Microsoft .NET Framework 4.7.2 or higher, as well as Microsoft Visual C++ 2015 Redistributable (x86). -
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HiJackThis
A free utility that finds malware and other threats
-- WARNING -- HiJackThis is an inactive project and it is not updated anymore. You may want to look at the existent unofficial forks though: https://github.com/dragokas/hijackthis/ -- HijackThis is a free utility that generates an in depth report of registry and file settings from your computer. HijackThis scan results make no separation between safe and unsafe settings , which gives you the ability to selectively remove items from your machine. In addition to scan and remove capabilities, HijackThis comes with several useful tools to manually remove malware from your computer. However, HijackThis does not make value based calls between what is considered good or bad. It is important to exercise caution and avoid making changes to your computer settings, unless you have expert knowledge. Source code is available SourceForge, under Code and also as a zip file under Files.