Best Open Source Security Software 2026

Security Software

Security Kirghiz Clear Filters

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.

Auth0 for AI Agents now in GA
Ready to implement AI with confidence (without sacrificing security)?

Connect your AI agents to apps and data more securely, give users control over the actions AI agents can perform and the data they can access, and enable human confirmation for critical agent actions.

Start building today
Cloud-based help desk software with ServoDesk
Full access to Enterprise features. No credit card required.

What if You Could Automate 90% of Your Repetitive Tasks in Under 30 Days? At ServoDesk, we help businesses like yours automate operations with AI, allowing you to cut service times in half and increase productivity by 25% - without hiring more staff.

Try ServoDesk for free
1

BleachBit

deletes junk files to free disk space and improve privacy

BleachBit frees disk space and maintains privacy. Cleans cache, Internet history, temporary files, logs, cookies, Firefox, Google Chrome, Flash, Windows, Linux, and more. Downloads are at www.bleachbit.org and source code is at GitHub.

60 Reviews

Downloads: 956 This Week

Last Update: 2025-10-23
See Project
2

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

6 Reviews

Downloads: 110 This Week

Last Update: 2025-10-04
See Project
3

Browser for Tor with Onion Router

Browser for Tor based on Dooble & Vidalia as integrated Addon

Tor now plugs into the Browser. Dooble Web Browser, a secure open source userfriendly tool to explore the web secure over Tor. Steer Tor in the Browser (in Settings/Proxy/Tor) with an Add-On based on Vidalia. Just start the Add-On "Tor" in the Browser Add-On-Menu and in Settings/Proxy.

Downloads: 22 This Week

Last Update: 2014-09-07
See Project
4

S.I.P.E.R.

Advanced website blocking and productivity tool

A powerful, user-friendly website blocking and productivity application built with modern GTK 4 and Libadwaita. S.I.P.E.R. helps you maintain focus and productivity by blocking distracting websites with advanced features like Pomodoro focus mode, comprehensive statistics, and multi-language support.

Downloads: 0 This Week

Last Update: 2025-11-11
See Project
Run applications fast and securely in a fully managed environment
Cloud Run is a fully-managed compute platform that lets you run your code in a container directly on top of scalable infrastructure.

Run frontend and backend services, batch jobs, deploy websites and applications, and queue processing workloads without the need to manage infrastructure.

Try for free