OpenSnitch14.3k
evilsocket/opensnitch
GNU/Linux application firewall that asks you whether each program may make a network connection.
Alternative to: Little Snitch
Little Snitch alternatives
3 open source tools you can use instead of Little Snitch
The most-starred open source alternative to Little Snitch is OpenSnitch. Other notable options: Portmaster, LuLu. All of them are free to download and most can run on your own server.
Portmaster14k
safing/portmaster
Application firewall and DNS blocker that stops tracking and mass surveillance on your device
Alternative to: Little Snitch
LuLu13.5k
objective-see/LuLu
Free open-source macOS firewall that controls outgoing network connections
Alternative to: Little Snitch
No tools match these filters.