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

  • Fully Managed MySQL, PostgreSQL, and SQL Server Icon
    Fully Managed MySQL, PostgreSQL, and SQL Server

    Automatic backups, patching, replication, and failover. Focus on your app, not your database.

    Cloud SQL handles your database ops end to end, so you can focus on your app.
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  • Ship Agents Faster Icon
    Ship Agents Faster

    Transform your applications and workflows into powerful agentic systems at global scale.

    Gemini Enterprise Agent Platform lets you rapidly build, scale, govern and optimize production-ready agents grounded in your organization's data. The platform enables developers to build custom or pre-built agents for virtually any use case. New customers get $300 in free credits.
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  • 1
    KeePass

    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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    Downloads: 198,062 This Week
    Last Update:
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  • 2
    optiSCAN

    optiSCAN

    Scanner antivirus gratuit (ClamAV + YARA) pour Windows

    πŸ›‘οΈ Antivirus gratuit pour Windows 10/11 Scanner antivirus pour Windows qui combine ClamAV (GPL-2.0) et les rΓ¨gles YARA pour repΓ©rer virus, malwares et fichiers suspects. Interface claire, en franΓ§ais et en anglais. Aucun compte, aucune publicitΓ©, aucune tΓ©lΓ©mΓ©trie. FonctionnalitΓ©s Analyse Γ  la demande : fichier, dossier ou disque Scan depuis le clic droit de l’Explorateur Mise en quarantaine et suppression des menaces Mise Γ  jour des signatures ClamAV et YARA Exclusion manuelle du dossier optiSCAN dans Windows Defender, aprΓ¨s l’installation Export PDF des rapports d’analyse Protection en temps rΓ©el en option (service Windows, dΓ©sactivΓ©e par dΓ©faut) PrΓ©requis : Windows 10 (version 1809 ou plus rΓ©cente) ou Windows 11, et le runtime .NET 8 Desktop. Licence : gratuiciel. Usage personnel et redistribution Γ  l’identique autorisΓ©s. Modification et commercialisation interdites. Auteur : Dona By https://github.com/1donatien0/optiSCAN
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    Downloads: 46 This Week
    Last Update:
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  • 3
    Tray TOTP Plugin for KeePass2

    Tray TOTP Plugin for KeePass2

    Plugin adding TOTP to KeePass2 tray menu, entry list and auto-type.

    Time based One Time Password Plugin to enable 2 step authentification (supports Google and Dropbox) by generating TOTPs from the KeePass tray icon. This plugin also provides a custom column to display and/or generate TOTP's. Auto-Type is also supported when the specified custom field is used in a keystroke sequence. This plugin requires KeePass 2.21 as it uses features that are not available in earlier versions.
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    Downloads: 25 This Week
    Last Update:
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  • 4
    CloseTheDoor
    CloseTheDoor indentifies all the listening ports TCP/UDP over IPv4/v6 and the associated program files. This will help you to detect security holes and close backdoors when you want to prevent remote attacks.
    Downloads: 7 This Week
    Last Update:
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  • Custom VMs From 1 to 96 vCPUs With 99.95% Uptime Icon
    Custom VMs From 1 to 96 vCPUs With 99.95% Uptime

    General-purpose, compute-optimized, or GPU/TPU-accelerated. Built to your exact specs.

    Live migration and automatic failover keep workloads online through maintenance. One free e2-micro VM every month.
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  • 5
    OpenVPN-Admin is a GUI for OpenVPN, programmed in Mono. Packages are available for Linux and Windows. Packages for Nokia 770 are under development. OpenVPN-Admin should work on every platform where Mono runs. Included in OpenVPN-Admin is a Certificate wi
    Downloads: 3 This Week
    Last Update:
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  • 6
    SaBackup

    SaBackup

    Create incremental backups

    SaBackup creates incremental backups of your data. For this it utilizes Microsoft's Robocopy and the Volume Shadow Copy Service. You can use any file browser to access your backups, no special program is needed.
    Downloads: 3 This Week
    Last Update:
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  • 7
    ALIMP (A LIttle More Privacy) is a .NET C# software enabling users to easily cypher and de-cypher files on their computer using common algorithm (DES, 3DES, AES, ...) that are shipped with the .NET Frawemork.
    Downloads: 0 This Week
    Last Update:
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  • 8
    Caditor is a portable tabbed text editor featuring encryption, syntax highlighting, autocomplete, line numbering and a functional plugin system.
    Downloads: 0 This Week
    Last Update:
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  • 9
    A program for encrypt/decrypt files or text inside clipboard with a password or a certificate located either in certificate storage (certmgr.msc) or in a .cer file. You just have to drag and drop files and folder to the application.
    Downloads: 0 This Week
    Last Update:
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  • Demo Series - Small Business Backup By Veeam Icon
    Demo Series - Small Business Backup By Veeam

    Learn how to protect your Microsoft 365 data, with simple, actionable tips today.

    Watch this on-demand demo series and learn how to protect your Microsoft 365 data with clear, simple, actionable steps that are easy to implement for businesses of all sizes.
    Watch Demo Series
  • 10
    Tool that encrypt a password using answers give by the user from pre-defined or user-defined questions and create a binary file that is used to retrieve the encrypted password (or lost password) by answering questions.
    Downloads: 0 This Week
    Last Update:
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  • 11
    Complete Privacy Suite. Deletes all Junks, Browser history, Manage passwords, Crypt Disk, Anonymous surfing, etc.
    Downloads: 0 This Week
    Last Update:
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  • 12
    Simple Password Manager
    This a simple password manager. Version of application : 1.0
    Downloads: 0 This Week
    Last Update:
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  • 13
    WinHostsFilter is a program which blocks unwanted webpages. The program works under Windows and it's compatible with all Web Browser. The soft is written in C#/.Net 2.0
    Downloads: 0 This Week
    Last Update:
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