Best Windows Security Software

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

General purpose TLS and crypto library

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

End-to-end encrypted cloud storage with a zero-knowledge architecture.

Unified secure network access for modern enterprises

Cross-platform backup tool with lock-free deduplication and client-side encryption.

Unlimited-device VPN built for streaming, torrenting, and Fire TV/Android TV setups

Legal-grade AI platform for contract drafting, negotiation, and review.

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

Detects and removes advanced threats and malware

Secure file sharing and document collaboration platform for business.

Zero-knowledge encrypted cloud storage from the makers of NordVPN

Create, edit, sign and share PDFs securely from any device

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.

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

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

Generates a detailed profile of your installed software and hardware.

Unified XDR and SIEM protection for endpoints and cloud workloads

Secure, zero-knowledge cloud backup and file sharing for peace of mind.

Defend yourself against tracking, surveillance, and censorship online.

Run data science on remote data without moving it.