Little Snitch Alternative for Mac?
Per-App Firewall Options Compared
Key Takeaways
Little Snitch is powerful but complex — per-connection prompts overwhelm most users
Several alternatives exist at different price points and complexity levels
SplitTunnel combines per-app firewall with per-app VPN routing in one tool
Why People Look for Little Snitch Alternatives
Little Snitch is the original macOS outbound firewall. It's been around since 2003 and has earned a strong reputation. But it's not for everyone.
Common reasons people look for alternatives:
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Per-connection prompts are overwhelming — every new connection triggers a dialog
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Complex rule management — hundreds of rules accumulate quickly
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Price — a one-time purchase, but can feel steep for simple blocking needs
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Overkill — many users just want to block a few apps, not monitor every connection
What to Look for in a macOS Outbound Firewall
The right tool depends on what you need:
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Per-app blocking — can you block an entire app with one rule?
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Ease of use — how quickly can you set it up and forget about it?
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Maintenance — do rules need constant updating?
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Additional features — VPN routing, network monitoring, etc.
Option 1: LuLu (Free, Open Source)
LuLu by Objective-See is a free, open-source macOS firewall. It alerts you when apps make outbound connections and lets you allow or block them.
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Free and open source
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Per-connection prompts (similar to Little Snitch)
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Created by a respected macOS security researcher
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Can be noisy during initial setup as every app triggers alerts for the first time
Option 2: Radio Silence ($9)
Radio Silence takes a simpler approach. No connection prompts — you manually add apps to a blocklist and they lose internet access.
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Simple, no-prompt interface
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One-time $9 purchase
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Simpler network monitoring compared to Little Snitch
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Does one thing well — blocks apps you choose
Option 3: SplitTunnel (Per-App Firewall + VPN Routing)
SplitTunnel combines per-app firewall blocking with per-app VPN routing. Block apps from the internet, route apps through VPN, or send them direct — all from the menu bar.
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Per-app blocking with one click — no per-connection prompts
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Also includes per-app VPN routing (split tunneling)
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Menu bar interface — manage rules without leaving your workflow
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Rules persist across restarts
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7-day free trial, then subscription
If you use a VPN for work and also want to block certain apps from the internet, SplitTunnel handles both in one tool instead of running two separate utilities.
Quick Comparison
Little Snitch gives you granular per-connection control at the cost of complexity. LuLu offers similar functionality for free. Radio Silence keeps it simple with manual blocking. SplitTunnel adds VPN routing alongside firewall control.
Which One Should You Choose?
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Want maximum visibility into every connection? Little Snitch or LuLu
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Just want to block a few apps quietly? Radio Silence
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Need both app blocking and VPN routing? SplitTunnel
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Want free and open source? LuLu
Frequently Asked Questions
Per-App Firewall + VPN Routing
Block apps and control VPN routing in one tool.
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