LuLu

LuLu

Free macOS outbound firewall

Description

You think a little tool just does its job, then it quietly phones home and ships your data out — and the built-in macOS firewall only watches incoming, so it never catches that. LuLu targets exactly this: when an app first tries to connect out, it asks whether to allow it, and blocks it if you say no.

Features



Outbound Blocking: Every app's first outbound connection prompts for consent.

Per-App Rules: Set allow or deny for each program individually.

Open & Auditable: The code is public and its behavior fully inspectable.