Free security audit tools in 2026 by audit target
Find a free security audit tool for web applications, networks, Linux hosts, TLS, or HTTP headers, with scope and setup limits explained.
Free security and privacy software
Compare free antivirus, VPN, password manager, and 2FA tools by plan limits, privacy model, and published security evidence.
Free security tools need a clear business model and limits you can verify. These guides compare published audit or lab information, device and data caps, recovery options, ads, and the point where a paid plan solves a real problem.
Where to start
- Free password managers: store unique passwords and sync them across supported devices
- Free 2FA apps: add a second login factor and plan how you will recover it
- Free VPN services: compare data, location, and device limits
- Free antivirus software: compare built-in protection, manual scanners, and free-plan restrictions
We compare published free-plan limits and note where an upgrade becomes necessary. Page dates change when we materially revise the guidance. How we evaluate · Affiliate disclosure · Report outdated info
6 guides in this category
Free password managers for teams in 2026
Find a free team password manager by comparing user limits, sharing, self-hosting, administration, recovery, and maintenance.
Free two-factor authentication apps in 2026
Find a free authenticator for Android or iPhone by comparing recovery, encrypted backups, device support, and migration limits.
Free antivirus software in 2026: built-in and third-party options
Find free antivirus for Windows or Mac by comparing real-time protection, manual scanning, platform support, and current plan limits.
Free VPNs in 2026: what each plan limits
Compare Proton VPN, Windscribe, and TunnelBear by data allowance, server choice, device support, and published security evidence.
Free password managers in 2026: sync, sharing, and recovery
Find a free password manager by comparing device sync, local vaults, sharing, recovery, passkeys, and current plan limits.