Best Open Source Security Software 2026

Security Software

Security Windows Server Operating Systems Multimedia Clear Filters

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

Auth0 B2B Essentials: SSO, MFA, and RBAC Built In
Unlimited organizations, 3 enterprise SSO connections, role-based access control, and pro MFA included. Dev and prod tenants out of the box.

Auth0's B2B Essentials plan gives you everything you need to ship secure multi-tenant apps. Unlimited orgs, enterprise SSO, RBAC, audit log streaming, and higher auth and API limits included. Add on M2M tokens, enterprise MFA, or additional SSO connections as you scale.

Sign Up Free
Gemini 3 and 200+ AI Models on One Platform
Access Google's best plus Claude, Llama, and Gemma. Fine-tune and deploy from one console.

Build generative AI apps with Vertex AI. Switch between models without switching platforms.

Start Free
1

Polarity Browser

A fast, secure, stable web browser powered by Chromium and Trident.

Polarity is a dual engine browser powered by both Chromium and Trident that focuses on system efficiency by bringing low RAM and low CPU usage. This browser was also programmed to be optimized for Windows with an Android version available. Browse the web with an uncomplicated UI that is highly customizable with themes, apps, and extensions from the Polarity Store, GreasyFork, OpenUserJS, and UserStyles. Polarity also comes with a built in password manager which safely encrypts all data to prevent theft. Polarity also comes with a built in adblocker and privacy tools such as proxy/VPN support and header masking to prevent further tracking online. If you appreciate all the hard work that we put into creating and developing Polarity, please consider giving a small donation at: https://polaritybrowser.netlify.com/donate

9 Reviews

Downloads: 52 This Week

Last Update: 2021-03-14
See Project
2

Aorta p2p Tasklet cluster

Generic clustering/load-balancing platform (over a LAN or internet) using java based P2P Aorta workers that execute java "tasklets". Various tasklets can be implemented to solve fractals, process images, render webpages, crack RSA "brute force".

Downloads: 1 This Week

Last Update: 2012-12-07
See Project
3

infotec

The goal of this project is to design and write comercial quality software and aplications with fully respect to free software (like in "free speach"). The software designed by us will target various fields: from scientific applications to multimedia an

Downloads: 1 This Week

Last Update: 2013-03-13
See Project
4

OpenIPMP

Open source DRM for MPEG-4 and MPEG-2 adhering to ISO/MPEG IPMP open standards (MPEG IPMP Hooks and IPMP-X), ISMAcryp and OMA DRM 2 specs. Includes CA, PKI, DOI mgmt, ISMA streaming, license server, encoding/encryption, player, plugin architecture, etc

1 Review

Downloads: 0 This Week

Last Update: 2015-11-09
See Project
Enterprise-grade ITSM, for every business
Give your IT, operations, and business teams the ability to deliver exceptional services—without the complexity.

Freshservice is an intuitive, AI-powered platform that helps IT, operations, and business teams deliver exceptional service without the usual complexity. Automate repetitive tasks, resolve issues faster, and provide seamless support across the organization. From managing incidents and assets to driving smarter decisions, Freshservice makes it easy to stay efficient and scale with confidence.

Try it Free
5

hyperQuant

Set of tools and libs for managing structured data in a very flexible way: Imp./Exp. ASCII, XML, SQL, PS, Tex/LaTex, RTF GUI: X-Windows, MS-Windows Interface to C++, DBs, Perl, PHP, Java, TCP/IP LISP-like interpreter written in C++ using C-LIB

Downloads: 0 This Week

Last Update: 2013-03-07
See Project