Best Web Open-Source Security Software

Comprehensive authentication framework

Open-source platform for secrets, certificates, and privileged access management

Secure access to all infrastructure

Lightweight Intranet Penetration Proxy Server

General purpose TLS and crypto library

High-performance reverse proxy for NAT traversal

Safe home for all your data

Privacy-focused Segment alternative

Real‑time spatial intelligence from ordinary WiFi signals

Distributed operating system for blockchain app builders

Bitwarden‑compatible vault hosted on Cloudflare Workers for free

Free backup software to store encrypted backups online

Secure authentication for Next.js apps

A secure password manager for teams

Automate OSINT for threat intelligence and attack surface mapping

Deduplicating backup solution

Secure password manager with zero‑knowledge encryption for individuals and teams

Secure CommsOS for mission-critical operations

Private and secure note-taking app