The Best WFC Alternatives in 2026

Manage Android firewall rules with AFWall+, an iptables-based firewall app.

Set network rules by application or globally with Fort Firewall for Windows.

Manage two-factor authentication codes with OTP Auth, an iOS app listed on the App Store.

Protect payment data with Evervault’s encryption model while retaining control of the payment experience.

Use Metasploit to find security issues, verify mitigations, and manage authorized penetration testing assessments.

Manage two-step verification tokens on Android with Aegis Authenticator, a free, open-source app.

Snyk helps software teams identify and manage security risks in code and dependencies while building AI-enabled applications.

Block internet access per Android app with NetGuard, a firewall that does not require root.

The Hitch proxy handles TLS connections for Varnish and is described by its project as open source.

Proxy Check provides a proxy detection API for identifying proxy connections used in online services and game servers.

IPv6 Leak Test checks whether a device has IPv6 connectivity and displays connection information related to privacy.

Spur analyzes internet infrastructure and network signals to help investigators interpret obfuscated connections.

JPEGMedic ARWE automatically recovers JPG files partially encrypted by ransomware, with a separate tool offering more recovery controls.

Configure network activity rules through Windows Filtering Platform with Simplewall.

Manage GnuPG keys from a terminal with gpg-tui, a text-based key management interface.

Karma Firewall is an Android firewall that states it requires no internet permission and intercepts no allowed user traffic.

The action firewall for AI agents. Enforce policy and human approval before risky tool calls, shell commands, workflows, and production changes, with auditable evidence.

ClawMoat helps guard AI agents against data leaks, unsafe tool use, and poisoned dependencies through an open-source firewall.

Terminate TLS connections through Hitch, a scalable TLS proxy from Varnish Software.

Generate secure SSL configurations for selected web, database, and mail software.

Discover hosts and map networks with Nmap, a network exploration and security scanning tool.

Binary Ninja supports software reverse engineering and can be tried in a browser or installed as a desktop application.

This HTML sanitizer tool converts text with special characters into HTML-safe output.

Big Number Calculator evaluates very large mathematical expressions in a web browser.