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

  • Our Free Plans just got better! | Auth0 Icon
    Our Free Plans just got better! | Auth0

    With up to 25k MAUs and unlimited Okta connections, our Free Plan lets you focus on what you do best—building great apps.

    You asked, we delivered! Auth0 is excited to expand our Free and Paid plans to include more options so you can focus on building, deploying, and scaling applications without having to worry about your security. Auth0 now, thank yourself later.
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  • Cloud tools for web scraping and data extraction Icon
    Cloud tools for web scraping and data extraction

    Deploy pre-built tools that crawl websites, extract structured data, and feed your applications. Reliable web data without maintaining scrapers.

    Automate web data collection with cloud tools that handle anti-bot measures, browser rendering, and data transformation out of the box. Extract content from any website, push to vector databases for RAG workflows, or pipe directly into your apps via API. Schedule runs, set up webhooks, and connect to your existing stack. Free tier available, then scale as you need to.
    Explore 10,000+ tools
  • 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: 221,794 This Week
    Last Update:
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  • 2
    Robolinux

    Robolinux

    Announcing Robolinux Cinnamon 14.1

    Announcing The New Robolinux Series 14 Mate LTS - 2034 Robolinux is very pleased to announce a completely new 14.1 Mate privacy centered 1inux operating system you can download freely while also offering our users an optional 14+ advanced upgrade which comes with our Untracker and FAAST Boot along with one click popular privacy software installers like Tor and I2p, Wireshark and Bleachbit plus many more for a fair and reasonable price. Robolinux14.1-Mate is ideal for beginners and advanced users. We are proud that it comes with Enoch AI which is TOTALLY 100% PRIVATE, FREE, HONEST & UNCENSORED built into Robolinux Cinnamon 14.1 The Robolinux 14.1 version with rock solid Long Term Support through 2034! requires users to set secure boot in their BIOS. It is currently available in the Cinnamon desktop flavor. we will release series 14 Xfce version in the next two months.For more information please see Readme file. Warmest regards John Martinson Robolinux.org
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    Downloads: 105 This Week
    Last Update:
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  • 3
    ASProxy

    ASProxy

    Project moved to https://github.com/salarcode/ASProxy

    This project is moved to https://github.com/salarcode/ASProxy ASProxy is a free and open-source service which allows the user to surf the net anonymously. It hides your identity and allows you to pass any filtering system. ASProxy supports most current web technologies such as AJAX, HTTPS, JavaScript, FTP and so on
    Downloads: 0 This Week
    Last Update:
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  • 4
    GTCop Professional Security Appliance aims to provide a powerful tool for satellite communications, with enhanced QoS and bandwidth controls. As derived from IPCop Firewall, it is a stable, secure, easy to configure and maintain GNU/Linux firewall box.
    Downloads: 0 This Week
    Last Update:
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  • Financial reporting cloud-based software. Icon
    Financial reporting cloud-based software.

    For companies looking to automate their consolidation and financial statement function

    The software is cloud based and automates complexities around consolidating and reporting for groups with multiple year ends, currencies and ERP systems with a slice and dice approach to reporting. While retaining the structure, control and validation needed in a financial reporting tool, we’ve managed to keep things flexible.
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  • 5
    The Martus (TM) Bulletin System is used by human rights and social justice groups to track violations. This Java program is as easy to use as email. Bulletins can be encrypted or searched, and can be backed up to a remote server. See www.martus.org.
    Downloads: 0 This Week
    Last Update:
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  • 6
    SWM (Secure WebMail) is an applet that provides confidentiallity and authentication in webmail applications using SHA/RSA algorithms. It can accompany virtually every webmail application, but comes with a plugin for squirrelmail and can run standalone.
    Downloads: 0 This Week
    Last Update:
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  • 7
    Sterlingcoin

    Sterlingcoin

    Low Fees | No Banks | 5.5% Interest | Transfer Worldwide

    Sterlingcoin is a digital currency used to pay for goods or services in daily life both offline and online. It is a decentralised system controlled by an open market and not by a corporation, bank or government. Because of its decentralisation everyone who runs the Sterlingcoin wallets shares the public ledger*. Sterlingcoin is a completely fair**, transparent and a highly secure form of currency for all needs. The price of Sterlingcoin is determined by supply & demand, use, trading and mining***. *Transaction history of every Sterlingcoin wallet **A limited supply of money would allow for a better economy; where ‘better’ means ‘fairer’, more stable and devoid of government intervention. ***Maintaining the block chain is called mining, and those who do so are rewarded with newly created Sterlingcoin and transaction fees.
    Downloads: 0 This Week
    Last Update:
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