LuLu by Objective-See AlternativesFirewalls & Network Monitors like LuLu by Objective-See

LuLu by Objective-See is described as 'LuLu is the free, shared-source macOS firewall that aims to block unknown outgoing connections unless explicitly approved by the user' and is a popular Firewall in the network & admin category. There are more than 10 alternatives to LuLu by Objective-See for a variety of platforms, including Mac, Android, Linux, Windows and iPhone apps. The best LuLu by Objective-See alternative is Portmaster, which is both free and Open Source. Other great apps like LuLu by Objective-See are Little Snitch, GlassWire, NetGuard and OpenSnitch.

  • ...

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

More about LuLu by Objective-See
LuLu by Objective-See alternatives page was last updated Jun 8, 2025
Copy a direct link to this comment to your clipboard
  1. Portmaster icon
     139 likes
    Copy a direct link to this comment to your clipboard

    Portmaster is a free and open-source privacy suite that puts you back in charge of your computer.

    31 Portmaster alternatives

    License model

    • FreemiumOpen Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Windows
    • Linux

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  Firewall
    2.  Network Tools
    3.  Application Firewall
    4.  Block Trackers
    5.  DNS Resolver
    6.  Ad-free
    7.  No Tracking
    8.  No registration required
    9.  Dark Mode
    10.  DNS over HTTPS
    11.  Spam Filter
    12.  Built-in VPN

    Portmaster VS LuLu by Objective-See

     
    • Portmaster is the most popular Windows & Linux alternative to LuLu by Objective-See.

    • Portmaster is the most popular Open Source & free alternative to LuLu by Objective-See.

    • Portmaster is Freemium and Open SourceLuLu by Objective-See is Free and Open Source
    • Portmaster is Privacy focusedLuLu by Objective-See is not according to our users
  2. Little Snitch icon
     134 likes
    Copy a direct link to this comment to your clipboard

    A firewall protects your computer against unwanted guests from the Internet. But who protects your private data from being sent out? Little Snitch does!

    39 Little Snitch alternatives

    License model

    Application types

    Country of Origin

    • AT flagAustria
    • European Union flagEU

    Platforms

    • Mac

    Properties

    1.  Privacy focused

    Features

    1.  Ad-free
    2.  No registration required
    3.  Rule based
    4.  Traffic Monitoring
    5.  Traffic Analysis
    6.  Custom rules
    7.  Application Firewall
    8.  Usage statistics
    9.  Real-time traffic

    Little Snitch VS LuLu by Objective-See

     
    • Little Snitch is the most popular Mac alternative to LuLu by Objective-See.

    • Little Snitch is the most popular commercial alternative to LuLu by Objective-See.

    • Little Snitch is Paid and ProprietaryLuLu by Objective-See is Free and Open Source
    • Little Snitch is Privacy focusedLuLu by Objective-See is not according to our users
  3. GlassWire icon
     144 likes
    Copy a direct link to this comment to your clipboard

    Visualize network activity in detail, get notified when new apps access the network, look out for malware, and block badly behaving apps.

    64 GlassWire alternatives

    License model

    • FreemiumProprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Windows
    • Android
    • Android Tablet

    Properties

    1.  Intuitive Interface

    Features

    1.  Network activity
    2.  Block apps
    3.  Built-in Firewall
    4.  Graphical component
    5.  Graphs
    6.  Traffic Monitoring
    7.  Push subscriptions
    8.  Network Tools

    GlassWire VS LuLu by Objective-See

     
    • GlassWire is the most popular Android & Android Tablet alternative to LuLu by Objective-See.

    • GlassWire is Freemium and ProprietaryLuLu by Objective-See is Free and Open Source
  4. NetGuard icon
     34 likes
    Copy a direct link to this comment to your clipboard

    NetGuard provides simple and advanced ways to block access to the internet - no root required.

    36 NetGuard alternatives

    License model

    • FreemiumOpen Source

    Application types

    Country of Origin

    • NL flagNetherlands
    • European Union flagEU

    Platforms

    • Android
    • Android Tablet
    • F-Droid

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  No Root Required
    2.  Website blocking
    3.  Dark Mode
    4.  No registration required
    5.  No Tracking
    6.  Ad-free

    NetGuard VS LuLu by Objective-See

     
  5. OpenSnitch icon
     37 likes
    Copy a direct link to this comment to your clipboard

    OpenSnitch is a GNU/Linux application firewall.

    33 OpenSnitch alternatives

    License model

    • FreeOpen Source

    Application types

    Country of Origin

    • IT flagItaly
    • European Union flagEU

    Platforms

    • Linux

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  Application Firewall
    2.  Firewall
    3.  Network Filtering
    4.  Ad-free
    5.  No registration required
    6.  Block Trackers
    7.  No Tracking

    OpenSnitch VS LuLu by Objective-See

     
  6. AFWall+ icon
     40 likes
    Copy a direct link to this comment to your clipboard

    Firewall (iptables frontend), based on DroidWall which is no longer being developed. A paid "donate"-version with more features it advertised within the app.

    19 AFWall+ alternatives

    License model

    • FreemiumOpen Source

    Application types

    Country of Origin

    • IN flagIndia

    Platforms

    • Android

    AFWall+ Features

    1.  Root required
    2.  Multiple languages

    AFWall+ VS LuLu by Objective-See

     
  7. Copy a direct link to this comment to your clipboard

    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.

    39 Little Snitch Mini alternatives

    License model

    • FreemiumProprietary

    Application type

    Country of Origin

    • AT flagAustria
    • European Union flagEU

    Platforms

    • Mac

    Little Snitch Mini Features

    1.  Network Filtering
    2.  Traffic Monitoring
    3.  Application Firewall

    Little Snitch Mini VS LuLu by Objective-See

     
  8. Firewalla icon
     Like
    Copy a direct link to this comment to your clipboard

    Firewalla is a vital security addition to every home and small business with network and IoT devices.

    39 Firewalla alternatives

    License model

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • iPhone
    • iPad
    • Android

    Firewalla Features

    1.  Block Trackers
    2.  Dark Mode
    3.  Content Filtering
    4.  Internet of Things
    5.  Security Monitoring

    Firewalla VS LuLu by Objective-See

     
    • Firewalla is the most popular iPhone & iPad alternative to LuLu by Objective-See.

    • Firewalla is Paid and ProprietaryLuLu by Objective-See is Free and Open Source
  9. Copy a direct link to this comment to your clipboard

    Lockdown Privacy is an Open Source and free firewall for your iOS device. We built the product to help protect users from app developers and analytics companies that are monetizing user data without consent or transparency.

    24 Lockdown Privacy alternatives

    License model

    • FreemiumOpen Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • iPhone
    • iPad

    Lockdown Privacy Features

    1.  Extensible by Plugins/Extensions
    2.  Block Trackers
    3.  Anti-tracking

    Lockdown Privacy VS LuLu by Objective-See

     
  10. Radio Silence icon
     21 likes
    Copy a direct link to this comment to your clipboard

    Radio Silence lets you block individual apps from accessing the internet. It never throws pop-ups on the screen, and is completely invisible.

    17 Radio Silence alternatives

    License model

    Application types

    Country of Origin

    • FI flagFinland
    • European Union flagEU

    Platforms

    • Mac

    Radio Silence Features

    1.  Block Trackers

    Radio Silence VS LuLu by Objective-See

     
  11.  3 likes
    Copy a direct link to this comment to your clipboard

    Receive notifications whenever a new program connects to the network, or when it's modified

    8 Picosnitch alternatives

    License model

    • FreeOpen Source

    Platforms

    • Linux

    Properties

    1.  Privacy focused

    Features

    1.  Traffic Monitoring

    Picosnitch VS LuLu by Objective-See

     
  12. Tiny Shield icon
     2 likes
    Copy a direct link to this comment to your clipboard

    Tiny Shield keeps your network safe by watching all connections and stopping bad stuff before it can harm your computer. Tiny Shield keeps an eye on everything your Mac connects to, making sure you can see all your internet activity in one place.

    14 Tiny Shield alternatives

    License model

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac

    Properties

    1.  Lightweight
    2.  Security-focused

    Features

    1.  Ad-free
    2.  No registration required
    3.  Outbound firewall
    4.  Website blocking
    5.  Traffic Monitoring
    6.  Block apps

    Tiny Shield VS LuLu by Objective-See

     
12 of 14 LuLu by Objective-See alternatives