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Best Free Alternatives to Little Snitch 6
Stop paying $59.00 (Single License) / $39.00 (Upgrade). Discover professional-grade tools that won't break your budget.
Category: FirewallVerified for 2025
Top Recommended Replacements
LuLu
FREEBest Professional Free Alternative
Why we like it
100% free and open-source; lightweight with minimal CPU impact; successfully blocks all unknown outgoing connections; frequently updated by security researcher Patrick Wardle.
Keep in mind
Lacks the advanced visual mapping and long-term traffic history of Little Snitch; no built-in DNS encryption or curated blocklist management.
Radio Silence
Best for Simplicity
Why we like it
The 'Invisible' firewall; zero pop-ups or interruptions; extremely low price for a lifetime license; perfect for users who just want to block specific apps without seeing a graph.
Keep in mind
No real-time monitoring; no way to see 'where' an app is connecting to, only whether it is allowed or blocked.
Little Snitch Mini
Best for Beginners
Why we like it
A simplified, subscription-based version found on the Mac App Store; features a single-window interface; uses community-maintained blocklists for 'set-and-forget' protection.
Keep in mind
Requires a subscription; lacks the advanced rule-creation and expert-level tools of the full Pro version.
Valley (Vallum) 4.0
Best Middle-Ground Alternative
Why we like it
Offers a 'drag-and-drop' rule-building interface; cheaper than Little Snitch while offering more visibility than Radio Silence; includes predefined 'preset' rules for common apps.
Keep in mind
Interface is less polished than Little Snitch; rule logic can sometimes be less intuitive than LuLu.
FireWally
FREEBest for Data Stats
Why we like it
Focuses on per-app data usage statistics and real-time block/allow; completely free; very modern and clean UI.
Keep in mind
Lacks the deep outbound filtering and 'system-process' monitoring required for high-security environments.
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