Best Mac Free Open-Source Security Software

Private, end-to-end encrypted messaging.

Simple vaultless password manager in Go

An open platform for various uses

Patch-level verification for Bundler

A secure password manager for teams

Run data science on remote data without moving it.

Fast and secure backup and versioning for files and directories

Network-wide ads & trackers blocking DNS server

Fast, secure, efficient backup program

High-performance reverse proxy for NAT traversal

Generate Software Bill of Materials from container images and filesystems

Free backup software to store encrypted backups online

A modern, secure password manager

Stateless password manager

Open-source antivirus engine for detecting malware across platforms

Lightweight Intranet Penetration Proxy Server

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

Secure, private budgeting for individuals and households

Secure, fast file transfers from the command line

Deduplicating backup solution

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

Password management for macOS

General purpose TLS and crypto library

Advanced offline password cracker supporting hundreds of hash types