LuLu by Objective-See icon
LuLu by Objective-See icon

LuLu by Objective-See

 51 likes

LuLu is the free, shared-source macOS firewall that aims to block unknown outgoing connections unless explicitly approved by the user.

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License model

  • FreeOpen Source

Application types

Country of Origin

  • US flagUnited States

Platforms

  • Mac
4.5 / 5 Avg rating (2)
51likes
1comment
0news articles

Features

Suggest and vote on features
  1.  Outbound firewall
  2.  Low resource footprint
  3.  Source code history
  4.  Firewall

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LuLu by Objective-See information

  • Developed by

    US flagObjective-See
  • Licensing

    Open Source (GPL-3.0) and Free product.
  • Written in

  • Rating

    Average rating of 4.5
  • Alternatives

    13 alternatives listed
  • Supported Languages

    • English

AlternativeTo Categories

Security & PrivacyNetwork & Admin

GitHub repository

  •  10,865 Stars
  •  502 Forks
  •  452 Open Issues
  •   Updated Apr 17, 2025 
View on GitHub

Our users have written 1 comments and reviews about LuLu by Objective-See, and it has gotten 51 likes

LuLu by Objective-See was added to AlternativeTo by salex on Mar 6, 2018 and this page was last updated Dec 11, 2019.

Comments and Reviews

   
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Top Positive Comment
Trendle
May 1, 2020
1

Very nice open source macOS application firewall. I am a fan.

What is LuLu by Objective-See?

LuLu is the free, shared-source firewall for macOS. Its goal is simple; block any unknown outgoing connections, until approved by the user. While it was designed to generically detect malware by flagging unauthorized networking connections, LuLu can also be used to block OS components or 3rd-party applications from transmitting information to remote servers.

What's to like about LuLu? Lots!

100% free As in no ads, no time trials, no missing features. Because why not!? And no, it doesn't track, monitor, or spy on you - as that'd just be pure evil!

Shared source The full source code for LuLu is available on GitHub. Such transparency allows anybody to audit its code, or understand exactly what is going on.

Protects LuLu aims to alert you whenever an unauthorized network connection is attempted. As such, it can generically detect malware, or be used to block legitimate applications that may be transmitting private data to remote servers.

Simple "Do one thing, do it well!" LuLu is designed as simply as possible. Sure this means complex features may not be available, but it also means it's easier to use and has a smaller attack surface!

Enterprise-friendly Want to know what network events are being detected? Or rules your users have added? LuLu provides simple mechanisms to subscribe to such events, and stores data such as rules in an open, easily digestible manner.

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