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Open Source Windows Security Software

Security Software for Windows

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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.

  • 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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  • Respond 100x faster, more accurately, and improve your documentation Icon
    Respond 100x faster, more accurately, and improve your documentation

    Designed for forward-thinking security, sales, and compliance teams

    Slash response times for questionnaires, audits, and RFPs by up to 90%. OptiValue.ai automates the heavy lifting, freeing your team to focus on strategic priorities with intuitive tools for seamless review and validation.
    Learn More
  • 1
    Securepoint SSL VPN Client

    Securepoint SSL VPN Client

    SSL VPN Client for Windows (OpenVPN).

    SSL VPN Client for Windows (OpenVPN).
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    Downloads: 1,038 This Week
    Last Update:
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  • 2
    Mullvad VPN desktop and mobile app

    Mullvad VPN desktop and mobile app

    The Mullvad VPN client app for desktop and mobile

    In a society that is increasingly determined to weaken that right, a fast, reliable and easy-to-use VPN connection is a good first step towards achieving this. By connecting to the Internet with Mullvad, we ensure that traffic to and from your device is encrypted to the highest standards, even when using public Wi-Fi in a coffee shop or hotel. We do not keep activity logs or ask for personal information, and we even encourage anonymous payments using cash or any of the accepted cryptocurrencies. Your IP address will be replaced with one of ours, ensuring that device activity and location are not linked to your user. Using Mullvad is quick and easy - just download and install the app. Don't spend time on complicated setup and multi-step registration processes. We designed Mullvad to be easy to use. Privacy is essential in a well-functioning society, as it allows norms, ethics and laws to be safely debated and challenged. Without privacy, a free and open society cannot flourish or exist.
    Downloads: 106 This Week
    Last Update:
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  • 3

    dex2jar

    Tools to work with android .dex and java .class files

    Mirrors: * https://bitbucket.org/pxb1988/dex2jar * https://github.com/pxb1988/dex2jar dex2jar contains following compment * dex-reader is designed to read the Dalvik Executable (.dex/.odex) format. It has a light weight API similar with ASM. * dex-translator is designed to do the convert job. It reads the dex instruction to dex-ir format, after some optimize, convert to ASM format. * dex-ir used by dex-translator, is designed to represent the dex instruction dex-tools tools to work with .class files. * d2j-smali disassemble dex to smali files and assemble dex from smali files. different implementation to smali/baksmali, same syntax, but we support escape in type desc "Lcom/dex2jar\t\u1234;" * dex-writer write dex same way as dex-reader.
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    Downloads: 376 This Week
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  • 4
    NbuExplorer
    Nokia NBU, NBF, NFB, NFC and ARC backup file parser, extractor and viewer. It can help you to check content of backup or extract files from it. Requires MS .Net Framework 2
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    Downloads: 137 This Week
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  • Accounting practice management software Icon
    Accounting practice management software

    Accountants, accounting firms, tax attorneys, tax professionals

    Canopy is a cloud-based practice management software for accounting and tax firms, offering tools for client engagement, document management, workflow automation, and time & billing. Its Client Engagement platform centralizes interactions with a secure portal, customizable branding, and email integration, while the Document Management system enables organized, paperless file storage. The Workflow module enhances visibility into tasks and projects through templates, task assignments, and automation, reducing human error. Additionally, the Time & Billing feature tracks billable hours, generates invoices, and processes payments, ensuring accurate financial management. With its comprehensive features, Canopy streamlines operations, reduces stress, and enhances client experiences.
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  • 5
    IOS6 and recent iTunes updates have broken a few features. We have made some partial fixes, but they are not complete. If you'd like to help support our development, or take over the development please let us know. Explore the internal file structure of your iphone (or of a seized phone in the case of forensic teams) using either the iphone's own backup files or (for jail broken iphones) ssh. Viewing of plist, sqlite, and hex are supported. IOS 5 is now supported iOS 6 only partially works at the moment (some features fail or are missing). Unfortunately paid work means we can't fix this right now, but would welcome anyone else submitting patches.
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    Downloads: 82 This Week
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  • 6
    DevHub

    DevHub

    Filter issues, activities and notifications

    DevHub is a mobile and desktop app to help you manage GitHub Notifications and stay on top of repository activities. Save custom searches, apply filters and don't miss anything important. Create columns for the repositories and people that matters to you; receive desktop push notifications; manage notifications, issues, pull requests and activities; bookmark things for later. Choose between two modes, desktop or menubar; enable push notifications only for the columns you want. All columns support a common set of filters, like bot, label, issue status, text, etc. The Issues & Pull Requests columns are special: they give you all the power of GitHub Advanced Search on your hands (filter by assignee, number of comments, etc. Create a column for each person and see what they are up to commits, comments, issues, pull requests, tags, releases, etc.
    Downloads: 3 This Week
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  • 7
    PushNotifications

    PushNotifications

    A macOS, Linux, Windows app to test push notifications on iOS Android

    PushNotitication is an app used for testing push notifications on iOS and Android. Support macOS, Windows, Linux. Support using certificate and token for authentication with APNS. Auto save settings. To connect to APNs you can use either Provider certificate or Authentication Token. They are different ways and Authentication Token is a new one. Provider certificate expires every year and needs to be regenerated (and reuploaded to your server as .p12). Authentication Token is unlimited and you don't have to recreate and reupload it.
    Downloads: 3 This Week
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  • 8
    Open eID Fraunhofer

    Open eID Fraunhofer

    Implementation of the protocols PACE, Terminal and Chip Authentication

    This project provides a pure Java implementation of the protocols PACE, Terminal Authentication and Chip Authentication for the german eID infrastructure as specified by BSI TR-03110 and BSI TR-03112. Furthermore this project contains an Android eID client based on this implementation.
    Downloads: 50 This Week
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  • 9
    MicroZip

    MicroZip

    Create,extract and encrypt ZIP,GZIP,TAR,BZIP2,TAZ files on Java mobile

    MicroZip is a powerful file compression and encryption utility for mobile phones which allows you to create and extract compressed archives in multiple formats and encrypt sensitive information with powerful AES-256 encryption. MicroZip can create and extract ZIP,TAR,TGZ,TBZ2 archives and extract many other formats as JAR,GZ,BZ2,TBZ,WAR,BZIP2,GZIP,Z,TAZ,CBZ etc. MicroZip allows you to extract selected files without extracting the whole ZIP archive. MicroZip also supports encrypted ZIP archives with both classic ZIP encryption and AES 256 encryption algorithm.
    Downloads: 8 This Week
    Last Update:
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  • Build experiences that drive engagement and increase transactions Icon
    Build experiences that drive engagement and increase transactions

    Connect your users - doctors, gamers, shoppers, or lovers - wherever they are.

    Sendbird's chat, voice, and video APIs power conversations and communities in hundreds of the most innovative apps and products. Sendbird’s feature-rich platform, and pre-fab UI components make developers more productive. We take care of a ton of operational complexity under the hood, so you can power a rich chat service, and life-like voice, and video experiences, and not worry about features, edge cases, reliability, or scale.
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  • 10
    NASH OS

    NASH OS

    Nash Operating System for Modern Ecommerce

    The all-built-in-one, automatic, ready-to-go out-of-box, easy-to-use state-of-the-art, and really awesome NASH OS! Over 25,000+ flexible features and controls and all scalable!! The most powerful solution ever built to instantly deliver new heights of online ecommerce enterprise to you.
    Downloads: 1 This Week
    Last Update:
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  • 11
    CRePE (Context-Related Policy Enforcement) aims to support efficient context-related policy enforcement on mobile platforms. A context-related policy is a policy which enforcing requires the awareness of the user/device context.
    Downloads: 0 This Week
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  • 12
    Mono-Pcsc - A .NET Mono wrapper for PCSC smartcard services. The library includes specific classes to communicate with Global Platform Javacard and Mifare contactless smartcard but will support any ISO7816 smartcard. Includes simple smartcard CLI appl.
    Downloads: 0 This Week
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  • 13
    Perl script to convert PalmOS keyring database to SplashID password manager.
    Downloads: 0 This Week
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  • 14
    Smoke Crypto Chat Messenger for Android

    Smoke Crypto Chat Messenger for Android

    Smoke: Android Crypto Chat Messenger

    Smoke is an encrypting chat messenger for Android written in Java. Please read the Web site for more information: https://textbrowser.github.io/smoke/ (original, current) https://www.amazon.com/dp/3752691999/ https://smokeappope.sourceforge.io/ (old, third party archive) Smoke App OPE - Open Personal Encryption Download Android APK Installer: https://sourceforge.net/projects/smokeappope/files/ Smoke Source: https://github.com/textbrowser/smoke SmokeStack Source: https://github.com/textbrowser/smokestack (Android) https://github.com/textbrowser/spot-on (Desktop) Smoke appears to be one of the first projects with an open source mobile encrypting chat server., an decentralized and easily-configurable chat server. Smoke is known as the first mobile McEliece Messenger: https://tarnkappe.info/artikel/english/mceliece-messaging-smoke-crypto-chat-the-first-mobile-mceliece-messenger-published-as-a-stable-prototype-worldwide-279847.html
    Downloads: 0 This Week
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  • 15

    Tidbits

    Simple web-based personal digital wallet.

    Tidbits is a web-based digital wallet. Use it to store usernames, passwords, phone numbers, or any little tidbit you might easily forget. Then you need only remember your one Tidbits password to access all your important details. Tidbits 2 is optimized for mobile touch-based devices like the iPhone and iPad (it works well on desktop browsers, too). The integrated search engine makes it a snap to find all those little nuggets you don't want to have to remember but want to be able to access anytime, anywhere.
    Downloads: 0 This Week
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  • 16
    VDE2 OpenMoko Tunnel is a Python/GTK visual interface created for OpenMoko Freerunner. It is intended to build virtual ethernet tunnels to remote VDE switches. This program is released under the GPL v2 as part of the Virtualsquare project.
    Downloads: 0 This Week
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  • 17

    chameleon_14443

    Low-cost, ISO 14443 compliant emulator for contactless smartcards

    ! This website is discontinued ! The new, improved MiniChameleon is maintained as of January 2014 on github: https://github.com/emsec/ChameleonMini ATXmega based emulator for contactless smartcards, designed and maintained by Embedded Security Group at the Ruhr-University in Bochum.
    Downloads: 0 This Week
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  • 18
    Software solution for creation and verification of digitral signatures. Can replace tokens and smart cards with mobile phones. Components included are client and server. Can creates, verifiy and store content and signatures. Offers secure sharing.
    Downloads: 0 This Week
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  • 19
    SMScryptor encrypts and decrypts messages sent from any mobile phones using : - AES 256 encryption - J2ME MIDP2.0 CLDC1.1 - ECMAScript - Apache / PHP / mysql
    Downloads: 0 This Week
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  • 20
    yaSSL, or yet another SSL, is an embedded ssl library for programmers building security functionality into their applications and devices. yaSSL is highly portable, and runs on standard as well as embedded platforms(QNX, ThreadX, VxWorks, Tron) yaSSL is still available but no longer being developed. Current development on the same project continues under wolfSSL. Visit yaSSL Home above for the latest stable release.
    Downloads: 0 This Week
    Last Update:
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