💡 Pick it for the most comprehensive macOS connection monitoring and rule controls.
Little Snitch is a popular application firewall for macOS that monitors network traffic and provides detailed information and control over all outgoing...
Best LuLu by Objective-See Alternatives ranked by AI · updated Aug 2026
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LuLu is a free, open-source outbound firewall for macOS that alerts users when applications attempt to make network connections. It is aimed at privacy-conscious Mac users and emphasizes transparent, community-auditable blocking rules.
Top 6 LuLu by Objective-See alternatives
💡 Choose it when you want low-noise app blocking with far less configuration.
Radio Silence is a network monitor and firewall application for macOS that allows users to monitor and block apps that are accessing...
$9 one-time purchase
3
Vallum
Guardian Angel Software
💡 Pick it for flexible, technical firewall policies without paying for Little Snitch.
Vallum is an application firewall for macOS that controls outbound connections using customizable rules and filters. It is aimed at technical users...
Pros
- Supports detailed application, domain, IP, and service rules
- Offers more policy customization than Radio Silence
- Includes rule groups and network-based filtering options
Cons
- Interface and terminology are less approachable than LuLu
- Smaller user community and ecosystem than Little Snitch
- Closed source and less independently auditable than LuLu
Free trial; from $15 one-time
💡 Choose it if you also need to control applications' access to local files and folders.
Hands Off! is a similar application firewall for macOS that allows you to monitor and control outgoing network connections.
Pros
- Easy to use interface
- Real-time network monitoring
Cons
- Paid software
$49.99
💡 Pick it for bidirectional firewall controls bundled with a broader Mac security suite.
NetBarrier is a comprehensive macOS firewall solution that provides network protection, application monitoring, and content filtering.
Pros
- Network protection
- Application monitoring
Cons
- Higher price compared to others
Starting from $49.99
6
Murus
Murus Software
💡 Choose it for low-level PF packet filtering and network policy control beyond app-based blocking.
Murus is a graphical firewall front end for macOS's PF packet-filtering system. It is aimed at advanced users who need low-level network...
Pros
- Provides deeper packet-filter and network-policy control than LuLu
- Can manage incoming, outgoing, routing, and service-level rules
- Builds on macOS's native PF firewall infrastructure
Cons
- Much steeper learning curve than LuLu
- Less convenient for identifying individual application's outbound connections
- Advanced PF concepts are required for effective configuration
Free version; Pro from $14.99 one-time
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