LuLu (2022) — Free Download for Mac

LuLu is a free open-source firewall app developed specifically for macOS, designed to block unknown outgoing connections, and users must have explicit approval to allow passage. This application features features to detect and block unauthorized network connections, effectively preventing malware and third-party applications from transmitting data to remote servers. LuLu's design concept is very simple, ensuring users can use it easily while maintaining a relatively small attack surface. LuLu's source code is publicly accessible on GitHub, increasing transparency. The app supports single-user installation, and its current features focus on process-level network rule management. Although LuLu aims to provide basic network monitoring, it does not have comprehensive self-protection capabilities, so it can still be bypassed for specific targeted attacks. Overall, LuLu is a reliable and easy-to-use tool that allows users to enjoy a safer online environment.

LuLu is an open-source macOS firewall designed to block unknown outgoing connections unless explicitly approved by the user. This application offers users a simple and effective way to control network traffic, preventing potential malware or unauthorized applications from sending data to remote servers.

Completely free : LuLu has no ads, no time limits, and no missing features—users can use it completely free of charge. It does not track, monitor, or espionage to ensure user privacy.

Share source code : LuLu's fully sourced code is available on GitHub, allowing anyone to review the code, understand how applications work, and provide transparency.

Protection function : LuLu is designed to alert users to any unauthorized network connection attempts, can detect potential malware, and can be used to block private data that legitimate apps may transmit.

Simple and easy to use : LuLu is designed with the philosophy of "doing one thing well," with simple and easy-to-understand functions, reducing complexity, making it easier to use, and lowering the attack surface.

Business-friendly : LuLu provides a simple mechanism to subscribe to network events, allowing users to see which events have been detected and the rules added by users, and to store data in an open way.

Explanation of restrictions : LuLu currently only monitors outgoing connections, does not support multi-user installations, and only sets rules at the process level to control running processes.

With LuLu, users can manage and protect their network connections more effectively, ensuring security in a modern connected environment. Download LuLu now to give your macOS device extra protection!

Details

Platform: Mac
Size: 7.3 MB
Version: 4.3.2
Developer: Patrick Wardle
Activation: Not required
Architecture: ARM
Release Year: 2022
Mode: Singleplayer

System Requirements

OS: macOS 26 Tahoe or later
Processor: Apple silicon M1 or better
Memory: 8 GB RAM
Graphics: Apple GPU (integrated)
Storage: 8 GB available space