Showing 1637 open source projects for "c source code"

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  • 1
    Defending Code Reference Harness

    Defending Code Reference Harness

    Skills for threat modeling, scanning, triage, patching, etc.

    ...Its default pipeline focuses on finding memory bugs in C and C++ code using ASAN as the crash detector. The overall architecture is meant to be adaptable, so teams can modify it for other languages, bug classes, and detection systems. Its main value is giving defenders a practical framework for exploring AI-assisted secure code review and remediation.
    Downloads: 1 This Week
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  • 2
    Claude Code Security Reviewer

    Claude Code Security Reviewer

    An AI-powered security review GitHub Action using Claude

    The claude-code-security-review repository implements a GitHub Action that uses Claude (via the Anthropic API) to perform semantic security audits of code changes in pull requests. Rather than relying purely on pattern matching or static analysis, this action feeds diffs and surrounding context to Claude to reason about potential vulnerabilities (e.g. injection, misconfigurations, secrets exposure, etc). When a PR is opened, the action analyzes only the changed files (diff-aware scanning),...
    Downloads: 0 This Week
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  • 3
    AWS Encryption SDK for C

    AWS Encryption SDK for C

    AWS Encryption SDK for C

    The AWS Encryption SDK for C is a client-side encryption library designed to make it easy for everyone to encrypt and decrypt data using industry standards and best practices. It uses a data format compatible with the AWS Encryption SDKs in other languages. For more information on the AWS Encryption SDKs in all languages, see the Developer Guide. We will demonstrate some simple build recipes for Linux, Mac, and Windows operating systems. These recipes assume a newly installed system with...
    Downloads: 0 This Week
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  • 4
    frida

    frida

    Dynamic instrumentation toolkit for developers

    Dynamic instrumentation toolkit for developers, reverse-engineers, and security researchers. Inject your own scripts into black box processes. Hook any function, spy on crypto APIs or trace private application code, no source code needed. Edit, hit save, and instantly see the results. All without compilation steps or program restarts. Works on Windows, macOS, GNU/Linux, iOS, Android, and QNX. Install the Node.js bindings from npm, grab a Python package from PyPI, or use Frida through its Swift bindings, .NET bindings, Qt/Qml bindings, or C API. ...
    Downloads: 309 This Week
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  • 5
    Ghidra

    Ghidra

    Ghidra is a software reverse engineering (SRE) framework

    Ghidra is a free and open-source reverse engineering framework developed by the NSA for analyzing compiled software. It supports a wide array of instruction sets and executable formats, offering features such as decompilation, disassembly, scripting, and interactive graphing. Designed for security researchers and analysts, Ghidra provides a robust environment for understanding malware, auditing code, and performing software forensics.
    Downloads: 1,126 This Week
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  • 6
    Flipper Zero Unleashed Firmware

    Flipper Zero Unleashed Firmware

    Flipper Zero Unleashed Firmware

    Flipper Zero Unleashed Firmware. This software is for experimental purposes only and is not meant for any illegal activity/purposes. We do not condone illegal activity and strongly encourage keeping transmissions to legal/valid uses allowed by law. Also, this software is made without any support from Flipper Devices and is in no way related to the official devs.
    Downloads: 28 This Week
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  • 7
    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: 34 This Week
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  • 8
    IPBan

    IPBan

    IPBan is a trusted, free security software to block hackers

    Since 2011, IPBan is the world's most trusted, free security software to block hackers and botnets. With both Windows and Linux support, IPBan has your dedicated or cloud server protected. Upgrade to IPBan Pro today and get a discount. Auto-ban ip addresses by detecting failed logins from event viewer and/or log files. On Linux, SSH is watched by default. On Windows, RDP, OpenSSH, VNC, MySQL, SQL Server, Exchange, SmarterMail, and MailEnable are watched. More applications can easily be added...
    Downloads: 27 This Week
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  • 9
    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: 11 This Week
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  • 10
    UACMe

    UACMe

    Defeating Windows user account control

    Run executable from command line, akagi32 [Key] [Param] or akagi64 [Key] [Param]. First parameter is a number of methods to use, second is an optional command (executable file name including full path) to run. The second parameter can be empty - in this case, the program will execute elevated cmd.exe from the system32 folder. Since 3.5.0 version all "fixed" methods are considered obsolete and removed altogether with all supporting code/units. If you still need them. This tool shows ONLY...
    Downloads: 3 This Week
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  • 11
    Google Authenticator PAM Library

    Google Authenticator PAM Library

    Example PAM module demonstrating two-factor authentication

    google-authenticator-libpam is a Pluggable Authentication Module (PAM) that adds one-time passcodes to Unix and Linux logins using open OATH standards. It plugs into PAM stacks for services like SSH, su, or desktop display managers, prompting users for a time-based (TOTP) or counter-based (HOTP) code after their password. A lightweight enrollment program bootstraps each account by generating a secret, printing a QR code, and writing per-user configuration with safe file permissions. Because...
    Downloads: 2 This Week
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  • 12
    thc-hydra

    thc-hydra

    Shows how easy it would be to gain unauthorized access to a system

    Number one of the biggest security holes are passwords, as every password security study shows. This tool is a proof of concept code, to give researchers and security consultants the possibility to show how easy it would be to gain unauthorized access from remote to a system. There are already several login hacker tools available, however, none does either support more than one protocol to attack or support parallelized connects. It was tested to compile cleanly on Linux, Windows/Cygwin,...
    Downloads: 44 This Week
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  • 13
    Flipper Zero Firmware

    Flipper Zero Firmware

    Flipper Zero firmware source code

    Flipper Zero is a portable multi-tool for pentesters and geeks in a toy-like body. It loves hacking digital stuff, such as radio protocols, access control systems, hardware, and more. It's fully open-source and customizable, so you can extend it in whatever way you like. Flipper Zero is a tiny piece of hardware with a curious personality of a cyber-dolphin. It can interact with digital systems in real life and grow while you use it. Explore any kind of access control system, RFID, radio...
    Downloads: 19 This Week
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  • 14
    hydra

    hydra

    Cloud native, security-first, API security for your infrastructure

    Secure access to your applications and APIs, and authenticate third party users. Ory / Hydra is Open Source and OpenID Connect Certified® technology that integrates with any login system. Get started in minutes, and provide secure access to your application and API endpoints. Ory / Hydra works with any login system and only a few lines of code are required. Ory / Hydra is written in Go and we provide SDKs for every language. We work with any login system and it is easy to customize the login experience. ...
    Downloads: 121 This Week
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  • 15
    Brakeman

    Brakeman

    A static analysis security vulnerability scanner for Ruby on Rails app

    Brakeman is a free vulnerability scanner specifically designed for Ruby on Rails applications. It statically analyzes Rails application code to find security issues at any stage of development. Brakeman now uses the parallel gem to read and parse files in parallel. By default, parallel will split the reading/parsing into a number of separate processes based on number of CPUs. In testing, this has dramatically improved speed for large code bases, around 35% reduction in overall scan time....
    Downloads: 3 This Week
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  • 16
    SimpleX

    SimpleX

    The first messaging platform operating without user identifiers

    Other apps have user IDs: Signal, Matrix, Session, Briar, Jami, Cwtch, etc. SimpleX does not, not even random numbers. This radically improves your privacy. The video shows how you connect to your friend via their 1-time QR-code, in person or via a video link. You can also connect by sharing an invitation link. Temporary anonymous pairwise identifiers SimpleX uses temporary anonymous pairwise addresses and credentials for each user contact or group member. It allows to deliver messages...
    Downloads: 47 This Week
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  • 17
    cargo-crev

    cargo-crev

    A cryptographically verifiable code review system for the cargo

    ...Increase the trustworthiness of your own code. Build a web of trust of other reputable users to help verify the code you use. Static binaries are available from the releases page. Crev is a system for verifying the security and reliability of dependencies based on collaborative code reviews. Crev users review the source code of packages/libraries/crates and share their findings with others.
    Downloads: 0 This Week
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  • 18
    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: 4 This Week
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  • 19
    ClamAV

    ClamAV

    Antivirus engine for detecting trojans, viruses and malware

    ClamAV is an open-source antivirus engine developed by Cisco Talos that provides cross-platform malware detection for servers, desktops, and mail systems. Originally designed for Unix environments and email security, it has evolved into a flexible antimalware toolkit capable of identifying millions of viruses, worms, trojans, and other threats. The software includes a command-line scanner, an automatically updating signature database, and a scalable multi-threaded daemon that enables...
    Downloads: 115 This Week
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  • 20
    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: 2 This Week
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  • 21
    FLARE VM

    FLARE VM

    A collection of software installations scripts for Windows systems

    FLARE VM is a security-focused Windows workstation distribution designed for malware analysis, reverse engineering, penetration testing, and threat hunting. It bundles a curated set of tools—disassemblers, debuggers, decompilers, virtualization, forensics utilities, packet capture tools, exploit frameworks, and hex editors—preconfigured to work together. The environment configures paths, dependencies, environment variables, and common tool integrations so analysts can focus on tasks rather...
    Downloads: 128 This Week
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  • 22
    SoftEther VPN

    SoftEther VPN

    Cross-platform multi-protocol VPN software

    An open-source free cross-platform multi-protocol VPN program, as an academic project from University of Tsukuba, under the Apache License 2.0. The API Suite allows you to easily develop your original SoftEther VPN Server management application to control the VPN Server (e.g. creating users, adding Virtual Hubs, disconnecting a specified VPN sessions) from JavaScript, TypeScript, C# or other languages.
    Downloads: 83 This Week
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  • 23
    theHarvester

    theHarvester

    E-mails, subdomains and names

    theHarvester is a very simple to use, yet powerful and effective tool designed to be used in the early stages of a penetration test or red team engagement. Use it for open source intelligence (OSINT) gathering to help determine a company's external threat landscape on the internet. The tool gathers emails, names, subdomains, IPs and URLs using multiple public data sources.
    Downloads: 33 This Week
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  • 24
    RuoYi Vue fast

    RuoYi Vue fast

    Single app of RuoYi-Vue Java rapid-development platform

    RuoYi-Vue-fast is the single-application edition of the RuoYi-Vue Java rapid-development platform. It stays synchronized with the main RuoYi-Vue project while packaging the backend as a simpler monolithic application. The backend uses Spring Boot, Spring Security, Redis, and JWT for application services and authentication. It supports dynamic permission menus, role-based access control, and multi-terminal authentication. Built-in modules manage users, departments, positions, menus, roles,...
    Downloads: 2 This Week
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  • 25
    Claude BugHunter

    Claude BugHunter

    A Claude Code skill bundle for bug hunting

    Claude-BugHunter is a Claude Code skill bundle focused on bug hunting, security testing, and external red-team research workflows. It packages a large collection of specialized skills, slash commands, and disclosed-report patterns so Claude Code can reason through common vulnerability classes more systematically. The project is meant to help authorized testers structure reconnaissance, triage, hypothesis building, exploitation reasoning, and reporting. It includes curated patterns from...
    Downloads: 0 This Week
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