Best Linux Free Security Software

Private, end-to-end encrypted messaging.

Secure dotenv for developers

Cross-platform password manager compatible with Keepass 2.x

Simple vaultless password manager in Go

An open platform for various uses

Secure and fast microVMs for serverless computing

Open-source antivirus engine for detecting malware across platforms

Patch-level verification for Bundler

A decentralized, end-to-end encrypted messenger that needs no phone number or email to use.

Free, complete implementation of the OpenPGP standard for encrypting and signing data.

Companion app that generates 2FA codes stored securely on a physical YubiKey.

Free open-source disk encryption with strong security, successor to TrueCrypt.

A lightweight KDE web browser built for privacy, security and deep customization

Advanced offline password cracker supporting hundreds of hash types

Fast, secure messaging on your computer

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

A fast, secure, and feature-rich web browser with built-in AI tools.

A fast, private, and secure web browser that blocks trackers by default.

A privacy-focused web browser built on the source code of Firefox.

A highly customizable and feature-rich web browser built for power users.

The latest Kali Linux release with updated tools for penetration testing and security research.

Unified XDR and SIEM protection for endpoints and cloud workloads

Defend yourself against tracking, surveillance, and censorship online.

Run data science on remote data without moving it.