Best Web Free Security Software

The world’s most popular messaging app.

Comprehensive authentication framework

Secure, two‑factor Bitcoin wallet for mobile and web

Secure, Simple and Scalable Video Conferences

Bitwarden‑compatible vault hosted on Cloudflare Workers for free

Automate cloud security and compliance

General purpose TLS and crypto library

Peer-to-peer file transfer with no size limits and nothing stored on servers

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

Single Sign-On Multi-Factor portal for web apps

Unified XDR and SIEM protection for endpoints and cloud workloads

Free, open-source password manager

Automate OSINT for threat intelligence and attack surface mapping

The web app for all your data manipulation and decoding needs

Free browser extension from EFF that learns to block hidden trackers as you browse.

The authentication glue you need

Secrets detection for GitHub, GitLab and Bitbucket repositories

Fast and secure backup and versioning for files and directories

Network-wide ads & trackers blocking DNS server

A fast, secure Chromium‑based browser built for privacy.

Fast, secure, efficient backup program

Fast, simple, and secure web browsing

High-performance reverse proxy for NAT traversal

A secure password manager for teams