Best Open-Source Security Software

Open-source password manager with a generous free tier.

Lightweight, privacy-friendly web analytics.

Private, end-to-end encrypted messaging.

Free, open-source password manager

A note-taking app with a focus on security and simplicity

Free backup software to store encrypted backups online

A simple, fast, and secure note-taking app

Open source password manager for teams

A secure password manager for teams

Deduplicating backup solution

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

The authentication glue you need

Fast, secure, efficient backup program

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

Secure password management on Android

Fast and secure backup and versioning for files and directories

Secure password management for Android

Secure password vault built for teams, with instant sharing and audit trails.

Network-wide ads & trackers blocking DNS server

Secure, Simple and Scalable Video Conferences

Easy, secure WireGuard networking with 2FA

Secure, fast file transfers from the command line

Lightweight Intranet Penetration Proxy Server

Interactive, scriptable man‑in‑the‑middle proxy for HTTP, HTTPS and WebSocket traffic