Best Open-Source Security Software

Password management for macOS

Secure password management for Android

Secure password management on Android

Stateless password manager

Fast, secure, efficient backup program

Fast and secure backup and versioning for files and directories

Network-wide ad blocking DNS server for homes and small businesses

Secure, private budgeting for individuals and households

Comprehensive authentication framework

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

Secure dotenv for developers

Cross-platform password manager compatible with Keepass 2.x

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

Generate Software Bill of Materials from container images and filesystems

Real‑time spatial intelligence from ordinary WiFi signals

Distributed operating system for blockchain app builders

Bitwarden‑compatible vault hosted on Cloudflare Workers for free

Open-source, ad‑free ClashMeta proxy client for all major platforms

Free backup software to store encrypted backups online