There are many alternatives to Little Snitch for Linux if you are looking for a replacement. The best Linux alternative is Wireshark, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Little Snitch and 12 are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to Little Snitch are Portmaster, OpenSnitch, ufw and Firewalld.
Wireshark is a premier network protocol analyzer used globally in industries and education, offering multi-platform support, deep protocol inspection, powerful display filters, and VoIP analysis. It allows both live capture and offline analysis, supporting various networks and protocols.
United States
Free, open-source privacy suite monitoring all network activity, blocking unwanted connections, using trusted filter lists for ads and malware, enforcing DNS-over-TLS, providing custom app and global rules, and supporting advanced privacy management.
Austria
EU
GNU/Linux firewall enabling interactive outbound network filtering, outbound application control, blocking of ads and malware domains, centralized GUI node management, input policy configuration, SIEM integration, real-time alerts, and user-level rule customization.
ItalyEU
Ufw stands for Uncomplicated Firewall, and is program for managing a netfilter firewall. It provides a command line interface and aims to be uncomplicated and easy to use.
Australia
Firewalld provides a dynamically managed firewall with support for network/firewall zones that define the trust level of network connections or interfaces. It has support for IPv4, IPv6 firewall settings, ethernet bridges and IP sets.
Receive notifications whenever a new program connects to the network, or when it's modified
The upribox Software turns your RaspberryPi into a privacy-enhancing Wireless router with adblocking, Tor, and a VPN server.
Douane is a personal firewall that protects a user's privacy by allowing a user to control which applications can connect to the internet from their GNU/Linux computer.
With InJoy Firewall™ 4.0 you can say good-bye to old-generation Firewall solutions that were difficult to implement, manage and measure — InJoy Firewall™ is different...
United States
spectraNET is a free per-application network monitor for macOS, Windows and Linux. It measures every connection of every program and shows which apps use the network, how much, with whom, and whether anything looks suspicious, as an animated 2.5D city or a 2D map.
ItalyEU
Experimental Rust/Aya XDP + TC firewall and traffic analyzer. Low-overhead packet filtering with release evidence still pending for production claims.
Real-time network traffic visualizer — see every connection your computer makes. Privacy-first, 100% local. / Visualiseur de trafic réseau en temps réel, 100% local.
FranceEU
