Hands Off! Alternatives

Little Snitch is a firewall application that monitors and controls outbound internet traffic.

Radio Silence is a network monitor and firewall for the macOS. The software stops apps from making network connections. The firewall runs in the background and does not require an open window.

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LuLu is the free open-source macOS firewall that aims to block unauthorized (outgoing) network...

Windows 10 Firewall Control: simple and exhaustive solution for applications network activity controlling and monitoring.

Manage your Mac's broadband usage while on a hotspot

Visualize network activity in detail, get notified when new apps access the network, look out for...

NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows.

IceFloor is the first OS X free graphic frontend for PF.

Lightweight and non-intrusive firewall

Emsisoft Online Armor Firewall is a freemium online firewall protection system by the Emsisoft that is based on the own independent protection technology of the Emsisoft.

CroxyProxy is the most advanced free and secure web proxy.

Windows Firewall Control is not the built in firewall system in the Windows operating systems.

TrackerControl allows users to monitor and control the widespread, ongoing, hidden data collection in mobile apps about user behaviour ('tracking').