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

  • 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
  • Earn up to 16% annual interest with Nexo. Icon
    Earn up to 16% annual interest with Nexo.

    Access competitive interest rates on your digital assets.

    Generate interest, borrow against your crypto, and trade a range of cryptocurrencies — all in one platform. Geographic restrictions, eligibility, and terms apply.
    Get started with Nexo.
  • 1
    pdfcrack is a command line, password recovery tool for PDF-files.
    Leader badge
    Downloads: 477 This Week
    Last Update:
    See Project
  • 2
    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
    Leader badge
    Downloads: 178 This Week
    Last Update:
    See Project
  • 3
    Bash Scripting

    Bash Scripting

    Free Introduction to Bash Scripting eBook

    This is an open-source introduction to Bash scripting guide/ebook that will help you learn the basics of Bash scripting and start writing awesome Bash scripts that will help you automate your daily SysOps, DevOps, and Dev tasks. No matter if you are a DevOps/SysOps engineer, developer, or just a Linux enthusiast, you can use Bash scripts to combine different Linux commands and automate boring and repetitive daily tasks, so that you can focus on more productive and fun things. The guide is suitable for anyone working as a developer, system administrator, or a DevOps engineer and wants to learn the basics of Bash scripting. The first 13 chapters would be purely focused on getting some solid Bash scripting foundations then the rest of the chapters would give you some real-life examples and scripts.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 4
    HT is a file editor/viewer/analyzer for executables. The goal is to combine the low-level functionality of a debugger and the usability of IDEs. We plan to implement all (hex-)editing features and support of the most important file formats.
    Leader badge
    Downloads: 36 This Week
    Last Update:
    See Project
  • Paessler: Easy to Use With Enterprise Power. Free Trial Icon
    Paessler: Easy to Use With Enterprise Power. Free Trial

    A low-code dashboard makes monitoring intuitive for any admin, while scripting and custom sensors give experts full control.

    You shouldn't have to choose between a monitoring tool that's easy to use and one that's powerful enough for a complex environment. PRTG's low-code interface lets any admin build dashboards, set alerts and monitor devices without scripting, while custom sensors and full API access are there when your team needs deeper control. One platform, no compromise. Download a free 30-day trial now.
    Get Free Download
  • 5
    Latte

    Latte

    The safest & truly intuitive templates for PHP

    The first truly secure and intuitive templates for PHP. The most common critical vulnerability in websites is Cross-Site Scripting (XSS). It allows an attacker to insert a malicious script into a page that executes in the browser of an unsuspecting user. It can modify the page, obtain sensitive information or even steal the user's identity. Templating systems fail to defend against XSS. Latte is the only system with an effective defense, thanks to context-sensitive escaping. Latte is based on PHP, whereas Twig is based on Python. A designer in Latte doesn't have to constantly switch between two different conventions. Stay in touch. The plugin for Tracy informs you on each page which templates and which variables are being rendered. Latte has native support in NetBeans and an excellent plugin for PhpStorm that suggests tags, filters and PHP code. Latte is a next generation templating system – it understands HTML.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 6
    shadowsocks-libev

    shadowsocks-libev

    Bug-fix-only libev port of shadowsocks

    Shadowsocks-libev is a lightweight secured SOCKS5 proxy for embedded devices and low-end boxes. Shadowsocks-libev is written in pure C and depends on libev. It's designed to be a lightweight implementation of shadowsocks protocol, in order to keep the resource usage as low as possible. Snap is the recommended way to install the latest binaries. You can build shadowsocks-libev and all its dependencies by script. The latest shadowsocks-libev has provided a redir mode. You can configure your Linux-based box or router to proxy all TCP traffic transparently, which is handy if you use an OpenWRT-powered router. Although shadowsocks-libev can handle thousands of concurrent connections nicely, we still recommend setting up your server's firewall rules to limit connections from each user. We strongly encourage you to install shadowsocks-libev from jessie-backports-sloppy.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 7
    OpenVPN ALS is a web-based SSL VPN server written in Java. It has a browser-based AJAX UI which allows easy access to intranet services. OpenVPN ALS is a direct descendant of Adito, which was a fork of SSL-Explorer.
    Downloads: 4 This Week
    Last Update:
    See Project
  • 8
    Outdated! Only works for Firefox 3.0-3.2. ff3hr is a forensic tool to recover deleted history records from Firefox 3. FF3 uses various SQLite databases to store the history, and this tool can recover records from different tables in an disk image.
    Downloads: 3 This Week
    Last Update:
    See Project
  • 9
    [[We are in the progress of moving to github]] Metalinks is a project to facilitate data distribution over mirrors and P2P networks. It does so by defining an XML format and the tools to handle these. The metalink files contain all the information needed to download and verify files.
    Leader badge
    Downloads: 2 This Week
    Last Update:
    See Project
  • Build Data Resilience - Take the Assessment Today Icon
    Build Data Resilience - Take the Assessment Today

    Can you recover when it matters most? Take this quick assessment to identify gaps and build greater recovery confidence.

    Is your recovery strategy as strong as you think? Take this quick self-assessment to check your recovery readiness and gain tailored insights. In only 2 minutes, you'll learn where you fall on the recovery readiness scale.
    Take the Assessment
  • 10
    Yoda's Protector
    Yoda's Protector is a free, open source, Windows 32-bit software protector.
    Downloads: 7 This Week
    Last Update:
    See Project
  • 11
    mendelson AS4

    mendelson AS4

    AS4 Solution for ENTSOG, e-SENS, ebMS, PEPPOL, ICS2, BDEW

    mendelson AS4 is a free JAVA-based open source AS4 solution. Contains a monitoring- and configuration GUI (SWING), supports PUSH and PULL messages, ENTSOG AS4, e-SENS AS4, ebMS AS4, BDEW AS4, PEPPOL AS4, ICS2 AS4, signatures (SOAP, payload), selectable profile per trading partner, encryption (SOAP, payload), UserNameToken, TLS, pluggable into any servlet container, trading partner management, compression, certificate management
    Downloads: 6 This Week
    Last Update:
    See Project
  • 12
    Gateway Anti-Virus allows applications across the enterprise to check files for viruses by providing a SOAP-based virus scanning web service. The system uses clamav for virus definitions and detection.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 13
    viewstate is a decoder and encoder for ASP .Net viewstate data. It supports the different viewstate data formats and can extract viewstate data direct from web pages. viewstate will also show any hash applied to the viewstate data.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 14
    Arcanum Editor
    The Arcanum Editor is a small but powerful tool to encrypt and decrypt messages. The program also comes with it's own format CTXT. This format is based on XML and allows you to save texts with the Advanced Encryption Standard.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 15
    Mistral-IdM is a project whose aim is to provide an identity management system, with advanced authentication and authorization abilities, based on standards (SAML, XACML, XKMS), providing a user-friendly administration console.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 16
    WebPin

    WebPin

    Advanced Modern Web Application Manager for Linux

    Advanced Modern Web Application Manager for Linux Transform any website into a native desktop application
    Downloads: 2 This Week
    Last Update:
    See Project
  • 17
    JDS: Data Security

    JDS: Data Security

    JDS is a powerful data protection program

    JDS is a powerful tool for data protection. Documents are encrypted using a special algorithm. The data encryption algorithm is constantly updated to improve security. The program also provides other functions. Such as sending a file to a vault with password access, fast text encryption in 3 types, and much more. The program is easy to use and does not require special knowledge. The standard version has 2 languages (Russian and English) and 9 themes. You can download the language and theme pack separately.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 18

    Secure Protocol Format

    Generic binary protocol library that prevents injection attacks

    Injection attacks can occur when transmitted data is not interpreted the same way by both the sender and the receiver. Guaranteeing equivalence in data interpretation, known as operational congruity, is achieved by separating fields of data on the basis of their length. When the length of the data is known, there is no risk of misinterpreting it on the basis of spaces or text delimiters. The Distinguished Encoding Rules, or DER, of the ASN.1 standard follows this approach but includes numerous constraints and, more importantly, demands that data fields to be described using binary metadata rather than text. The Secure Protocol Format, or SPF, was created as a simplified version of DER. In addition to delimiting data by length, it also affords programmers the ability to use text for describing data, just like tags are used in HTML and XML. Thus, SPF provides a simple and practical approach to preventing command injection attacks while allowing text to describe data.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 19
    Tcpconns:simple package for rapid development of multi-threaded client/server solutions (JAVA OpenJDK17+) with TLS (V1.3).
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    CoDec is a Java package for encoding and decoding ASN.1 data structures. CoDec supports the Basic Encoding Rules (BER) as well as the Distinguished Encoding Rules (DER) and provides a library with data structures for many cryptographic standards.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21

    APIthet

    An Application to security test RESTful web APIs.

    APIthet is an application to security test RESTful web APIs. Assessing APIs help in detecting security vulnerabilities at an early stage of the SDLC. Compare this with assessing an Android application that uses APIs on a backend server. This kind of assessment happens at a much later phase of the SDLC. Even worse, it does not necessarily touch all the APIs. That's not all. You specify one of the JSON parameters as random. This helps set a unique value for a specific JSON parameter in an API. The application is available as a Windows exe file.. In progress and planned features: -More test cases to attack target API. -Add APIs and define sequence. -Read APIs from doc link. -Business Logic test. TODO: Build for Linux (and may be OS X).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 22
    AceJudge is a system for managing programming contests. AceJudge's basic features include automatic judging of submitted programs, answering to clarification questions about problem descriptions, reevaluation of programs, real time ranking etc.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 23
    Advisory Check is a tool for monitoring the security of installed software. It gathers security advisories using RSS/RDF/XML feeds, compares them against a list of known software, and alerts you if you're vulnerable. Let advchk read advisories for you!
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    B-Trust eDoc is a program built on top of LibDigiDoc a free implementation of the OpenXAdES standard for signing/encrypting files using smartcard tokens. It also contains Openssl and PKCS11 wrapper classes in C++ which might be useful to developers.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    BWTC32Key

    BWTC32Key

    A file compressor with AES256CTR and Base32768 binary-to-text encoding

    BWTC32Key is a program I wrote that compresses data, then optionally encrypts it, and then outputs a Base32768 representation as the final output
    Downloads: 0 This Week
    Last Update:
    See Project
  • Previous
  • You're on page 1
  • 2
  • 3
  • 4
  • 5
  • Next