There are many alternatives to Flying Buttress for Mac and since it's discontinued a lot of people are looking for a replacement. The best Mac alternative is Little Snitch. It's not free, so if you're looking for a free alternative, you could try Little Snitch Mini. If that doesn't suit you, our users have ranked six alternatives to Flying Buttress and four of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Flying Buttress are Radio Silence and Vallum.
Firewall application for monitoring and controlling outbound network connections, notifying users of attempted access, supporting rule-based blocking, real-time alerts on suspicious activity, and preventing unauthorized data transmission on macOS systems.
As soon as you’re connected to the Internet, your apps can send whatever they want to wherever they want, unnoticed by you, because all of this happens invisibly under the hood.
Radio Silence lets you block individual apps from accessing the internet. It never throws pop-ups on the screen, and is completely invisible.
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