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.

  • Paessler - Monitor Your Whole Network in Minutes Icon
    Paessler - Monitor Your Whole Network in Minutes

    Auto-discovery finds your devices and deploys pre-configured sensors instantly. No project plan required, just visibility from day one.

    Waiting weeks for a monitoring rollout isn't an option when infrastructure doesn't stop running. PRTG's auto-discovery scans your network and suggests from over 200 pre-configured sensor types, so you're watching servers, applications and devices within minutes, not after a multi-week deployment. Enterprise-strength monitoring, without the enterprise complexity. Start your free trial today.
    Start Free 30-Day Trial
  • MongoDB Atlas runs apps anywhere Icon
    MongoDB Atlas runs apps anywhere

    Deploy in 115+ regions with the modern database for every enterprise.

    MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
    Start Free
  • 1
    Notesnook

    Notesnook

    A fully open source & end-to-end encrypted note taking alternative

    Notesnook makes it impossible for anyone to spy on your notes. Unlike Evernote and other note taking apps, your data is private, not open for everyone to see. Ditch other note taking apps that don't care about your data privacy. With app lock and private notes vault, your personal diary & journal are always safe. Worried that your friend will read your private notes? Notesnook fixes that by having an app lock built-in. Use a pin or biometrics to protect your notes. Protect your online journal or personal diary with an extra layer of security. Your notes vault is a super secure way to store your passwords, credentials & other secrets. Free or Pro, you get the same level of privacy. Making privacy a paid feature means only the privileged few deserve it but privacy is your right. And rights don't have a price tag, or do they? To verify that your notes are actually encrypted (and we aren't just lying), you can use our open source tool, Vericrypt.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 2
    Encrypted Notepad
    UPDATE 2024: Get a new version here: https://github.com/ivoras/EncryptedNotepad2 "Encrypted Notepad" does only one thing, but aims to do it perfectly - a Notepad-like simple text editor where files are saved (and later loaded) encrypted with industrial strength algorithms. Available both for the desktop (as a Java application) and on Android. Unencrypted data is never stored on-disk. Source is released (on SourceForge) under the BSD license.
    Downloads: 6 This Week
    Last Update:
    See Project
  • 3
    BitCrazy's Faucet-in-a-Box Mod

    BitCrazy's Faucet-in-a-Box Mod

    Mod of the original Faucet-in-a-Box faucet PHP script

    Mod of the original Faucet-in-a-Box faucet PHP script (based on its revision 69). Includes pre-installed Anti-Bot Links 5.75, full support of user balances, countdown timer and some other improvements and cool features. ======================================== Minimum requirements: PHP 5.4.4+ (5.5 recommended) MySQL (5.6 recommended) ======================================== CHANGELOG { [F] - bugfixes, [+] - new features, [!] - known issues } Current release (version 7): [+]: CACert.pem updated to latest version. [+]: FaucetHub.php was replaced with native FaucetHub library! [+]: Faucet now has page "Currency rate", where you can see USD price of selected currency. [+]: Anti-Bot Links were updated to version 5.75 [F]: + various related fixes & small changes. [!]: Script has no support for FaucetHub's "last_status" code and "checkAddress()" fn (at least, now)
    Downloads: 2 This Week
    Last Update:
    See Project
  • 4