Showing 915 open source projects for "c# source code"

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    KeePassXC

    KeePassXC

    KeePassXC is a cross-platform community-driven port

    ...Every feature looks, feels, works, and is tested on Windows, macOS, and Linux. You can expect a seamless experience no matter which operating system you are using. The full source code is published under the terms of the GNU General Public License and made available on GitHub. Use, inspect, change, and share at will; contributions by everyone are welcome.
    Downloads: 29 This Week
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  • 2
    Al-Khaser

    Al-Khaser

    Public malware techniques used in the wild: Virtual Machine, Emulation

    al-khaser is an open-source proof-of-concept security tool that deliberately implements techniques commonly used by real-world malware to test and evaluate the effectiveness of antivirus and endpoint detection and response (EDR) systems. It’s written in C/C++ and designed to execute a wide range of anti-analysis, anti-debugging, anti-virtualization, timing-based evasion, and sandbox detection routines so security researchers and defenders can see how well their tools detect or ignore these behaviors. ...
    Downloads: 10 This Week
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  • 3
    BoringSSL

    BoringSSL

    Mirror of BoringSSL

    ...Google products that use BoringSSL ship their own copies and update them as needed, enabling faster iteration without legacy constraints. BoringSSL includes comprehensive API documentation, build instructions, and guidance for porting code from OpenSSL.
    Downloads: 7 This Week
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  • 4
    ModSecurity

    ModSecurity

    Cross platform web application firewall (WAF) engine for Apache

    ModSecurity is an open-source, cross-platform web application firewall (WAF) engine for Apache, IIS and Nginx that is developed by Trustwave's SpiderLabs. It has a robust event-based programming language that provides protection from a range of attacks against web applications and allows for HTTP traffic monitoring, logging and real-time analysis. Libmodsecurity is one component of the ModSecurity v3 project. The library codebase serves as an interface to ModSecurity Connectors taking in web...
    Downloads: 2 This Week
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  • 5
    OpenH264

    OpenH264

    Open Source H.264 Codec

    Cisco has taken their H.264 implementation and open-sourced it under BSD license terms. Development and maintenance will be overseen by a board from the industry and the open-source community. Furthermore, we have provided a binary form suitable for inclusion in applications across a number of different operating systems and made this binary module available for download from the Internet. We will not pass on our MPEG-LA licensing costs for this module, and based on the current licensing...
    Downloads: 53 This Week
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  • 6
    BlockTheSpot

    BlockTheSpot

    Video, audio & banner adblock/skip for Spotify

    BlockTheSpot is an open-source modification tool designed to block advertisements and bypass certain limitations in the Spotify desktop application for Windows. It works by patching the Spotify client and injecting custom logic that prevents audio, video, and banner ads from being displayed or played during usage. The tool focuses primarily on performance and ad suppression rather than cosmetic changes, ensuring that playback remains uninterrupted. It includes configurable options that allow...
    Downloads: 55 This Week
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  • 7
    RoguePlanet

    RoguePlanet

    https://github.com/MSNightmare/RoguePlanet

    ...The project describes a race-condition issue that can behave inconsistently depending on machine state, timing, and environment. Its README states that it was tested on Windows 11 and Windows 10 systems with the June 2026 patch installed. The repository includes a C++ source file, a compiled executable, a license, and a short explanation of the vulnerability behavior. Because the project concerns privilege escalation behavior, it should be treated strictly as security research material for authorized testing, defensive validation, or vendor analysis. It is not a general-purpose utility, and it should not be used against systems without explicit permission.
    Downloads: 2 This Week
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  • 8
    OSS-Fuzz

    OSS-Fuzz

    OSS-Fuzz - continuous fuzzing for open source software

    ...OSS-Fuzz integrates modern fuzzing engines with sanitizers and runs them at scale in a distributed environment, providing automated testing and continuous monitoring. The platform supports multiple programming languages including C/C++, Rust, Go, Python, Java/JVM, and JavaScript, ensuring wide coverage across critical open source projects.
    Downloads: 0 This Week
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  • 9
    Zeek

    Zeek

    Zeek is a powerful network analysis framework

    Zeek has a long history in the open source and digital security worlds. Vern Paxson began developing the project in the 1990s under the name “Bro” as a means to understand what was happening on his university and national laboratory networks. Vern and the project’s leadership team renamed Bro to Zeek in late 2018 to celebrate its expansion and continued development. Zeek is not an active security device, like a firewall or intrusion prevention system. Rather, Zeek sits on a “sensor,” a...
    Downloads: 6 This Week
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  • 10
    Osquery

    Osquery

    SQL operating system instrumentation and monitoring framework

    Osquery is an operating system instrumentation framework for Windows, OS X (macOS), Linux, and FreeBSD. The tools make low-level operating system analytics and monitoring both performant and intuitive. Osquery exposes an operating system as a high-performance relational database. This allows you to write SQL queries to explore operating system data. With osquery, SQL tables represent abstract concepts such as running processes, loaded kernel modules, open network connections, browser...
    Downloads: 2 This Week
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  • 11

    Microsoft SEAL

    Easy-to-use and powerful homomorphic encryption library

    Microsoft SEAL is an open-source homomorphic encryption library that allows computations to be performed directly on encrypted data, with no need for any decryption. Developed by the Cryptography and Privacy Research group at Microsoft, it enables software engineers to build end-to-end encrypted data storage and computation services that never have to procure the customer's key. Microsoft SEAL is very easy to use, compile and run in many different environments. Homomorphic encryption is...
    Downloads: 1 This Week
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  • 12
    Namecoin Core

    Namecoin Core

    Namecoin full node + wallet based on the current Bitcoin Core codebase

    Namecoin Core is the reference implementation of Namecoin, a decentralized naming system based on the Bitcoin protocol. It allows users to register and manage domain names and identities on a blockchain, aiming to provide censorship-resistant and secure alternatives to traditional DNS systems.​
    Downloads: 0 This Week
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  • 13
    nsjail

    nsjail

    A lightweight process isolation tool that utilizes Linux namespaces

    A lightweight process isolation tool that utilizes Linux namespaces, cgroups, rlimits and seccomp-bpf syscall filters, leveraging the Kafel BPF language for enhanced security. It utilizes Linux namespace subsystem, resource limits, and the seccomp-bpf syscall filters of the Linux kernel.
    Downloads: 0 This Week
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  • 14
    Qtum

    Qtum

    Qtum Core Wallet

    Qtum is a decentralized blockchain project built on Bitcoin's UTXO model, with support for Ethereum Virtual Machine-based smart contracts, and secured by a proof of stake consensus model. It achieves this through the revolutionary Account Abstraction Layer which allows the EVM to communicate with Qtum's Bitcoin-like UTXO blockchain. Welcome to the Qtum Ignition Main Network. This is the main network where the tokens hold value and should be guarded very carefully. If you are testing the...
    Downloads: 0 This Week
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  • 15
    The database access library for C++ programmers that provides the illusion of embedding SQL in regular C++ code, staying entirely within the C++ standard.
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    Downloads: 42 This Week
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  • 16
    Safe Exam Browser
    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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    Downloads: 158,543 This Week
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  • 17
    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...
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    Downloads: 299,677 This Week
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  • 18
    denuvo

    denuvo

    DENUVO (VMProtect 2.6x) VM research tool

    This is part of the original source code of DENUVO_Profiler, written by 386 Team in 2014-2017 to investigate the first versions of DENUVO (eq VMProtect 2-3), when there were no lifters and other modern devirtualisation tools. DENUVO_Profiler is a subsequent development of the SecuROM_Profiler utility - the simplest tool for visualising the operation of a virtual machine and effectively controlling the data it uses in the byte-code tape (p-code).
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    Downloads: 53 This Week
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  • 19
    WinSCP

    WinSCP

    WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.

    WinSCP is a popular free file manager for Windows supporting SFTP, FTP, FTPS, SCP, S3, WebDAV and local-to-local file transfers. A powerful tool to enhance your productivity with a user-friendly interface and automation options like .NET assembly or batch file scripting. Use WinSCP also for file editing, directory synchronization and site management. WinSCP is open-source and well documented. It is available in English and many other languages.
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    Downloads: 205,479 This Week
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  • 20
    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: 666 This Week
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  • 21
    System Informer

    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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    Downloads: 7,035 This Week
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  • 22
    Eraser

    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.
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    Downloads: 5,538 This Week
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  • 23
    x64dbg

    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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    Downloads: 9,632 This Week
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  • 24
    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....
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    Downloads: 2,461 This Week
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  • 25
    Password Safe

    Password Safe

    Popular easy-to-use and secure password manager

    Password Safe is a password database utility. Users can keep their passwords securely encrypted on their computers. A single Safe Combination unlocks them all.
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    Downloads: 2,400 This Week
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