Alternatives to Fort Firewall
Open-source per-application firewall for Windows built on its own filtering driver. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Fort Firewall
Open-source per-application firewall for Windows built on its own filtering driver.
Replacements
Listings that take over the same core job as Fort Firewall.
simplewall
Puts a plain list of programs in front of the Windows Filtering Platform, so you decide what is allowed online.
simplewall uses the Windows Filtering Platform with a plain allow and block list and a portable build, open source like Fort Firewall.
TinyWall
A free, lightweight firewall controller for Windows that works without pop-up prompts.
TinyWall controls outbound access on Windows without pop-up prompts and installs no drivers, though it is closed source and not rule-editing focused.
Windows Firewall Control
A tray tool that extends Windows Firewall with outbound connection prompts and quick filtering modes.
Windows Firewall Control extends the built-in Windows Firewall with outbound prompts and quick filtering modes instead of Fort Firewall's own driver.
Portmaster
Shows every connection each application makes and lets you block any of them, with sensible defaults already set.
Portmaster shows every application connection and blocks trackers and malware by default on Windows and Linux, with some features paid.
GlassWire
Network monitor and firewall with a visual traffic history.
GlassWire adds a visual traffic history and first-connection alerts on Windows and Android, with longer retention and features behind a paid licence.
