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

More about LuLu by Objective-See
More about LuLu by Objective-See
LuLu by Objective-See alternatives page was last updated Jun 8, 2025
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  1. Portmaster icon

    Portmaster

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

    31 Portmaster alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Windows
    • Linux
    Dashboard PMv1.4

    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

    Little Snitch

     134 likes
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    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
    Little Snitch screenshot 1

    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
  4. GlassWire icon

    GlassWire

     144 likes
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    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

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Windows
    • Android
    • Android Tablet
    GlassWire's graph shows you real-time network activity broken down by apps, traffic, and hosts.

    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
  5. Ad
    Screenshot
    GlassWire icon
    GlassWire

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

    https://www.glasswire.com
    Learn More
  6. NetGuard icon

    NetGuard

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

    36 NetGuard alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • NL flagNetherlands
    • European Union flagEU

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    NetGuard screenshot 1
    NetGuard screenshot 2
    NetGuard screenshot 3

    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

     
  7. OpenSnitch icon

    OpenSnitch

     37 likes
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    OpenSnitch is a GNU/Linux application firewall.

    33 OpenSnitch alternatives

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • IT flagItaly
    • European Union flagEU

    Platforms

    • Linux
    OpenSnitch screenshot 1

    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

     
  8. AFWall+ icon

    AFWall+

     40 likes
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    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

    • Freemium • Open Source

    Application types

    Country of Origin

    • IN flagIndia

    Platforms

    • Android
    AFWall+ screenshot 1
    AFWall+ screenshot 2
    AFWall+ screenshot 3

    AFWall+ Features

    1.  Root required
    2.  Multiple languages

    AFWall+ VS LuLu by Objective-See

     
  10. Little Snitch Mini icon

    Little Snitch Mini

     1 like
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    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

    • Freemium • Proprietary

    Application type

    Country of Origin

    • AT flagAustria
    • European Union flagEU

    Platforms

    • Mac
    Little Snitch Mini screenshot 1

    Little Snitch Mini Features

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

    Little Snitch Mini VS LuLu by Objective-See

     
  11. Firewalla icon

    Firewalla

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    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 screenshot 1
    Firewalla screenshot 2
    Firewalla screenshot 3

    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
  12. Lockdown Privacy icon

    Lockdown Privacy

     7 likes
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    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

    • Freemium • Open Source

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • iPhone
    • iPad
    Lockdown Privacy screenshot 1

    Lockdown Privacy Features

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

    Lockdown Privacy VS LuLu by Objective-See

     
  13. Radio Silence icon

    Radio Silence

     21 likes
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    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 screenshot 1
    Radio Silence screenshot 2

    Radio Silence Features

    1.  Block Trackers

    Radio Silence VS LuLu by Objective-See

     

  14. Picosnitch

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

    8 Picosnitch alternatives

    License model

    • Free • Open Source

    Application types

    Platforms

    • Linux
    Picosnitch screenshot 1

    Properties

    1.  Privacy focused

    Features

    1.  Traffic Monitoring

    Picosnitch VS LuLu by Objective-See

     
  15. Tiny Shield icon

    Tiny Shield

     2 likes
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    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
    Tiny Shield screenshot 1

    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