Similar to Lulu, it’s completely free and open-source so that’s awesome. It’s still in beta, but the app surprisingly works great. Netiquette is a latest network monitoring tool created by Objective-See team who have developed another app in this list, Lulu.
Hands Off: Install (Free, one-time purchase of $49.99)
Radio Silence: Install (Free trial for 30 days, one-time purchase of $9) 2. To sum up, Radio Silence is among the best Little Snitch alternatives and we recommend it without any reservation. Thereafter, you can block, inspect or allow the connection without jumping through hoops. And the best part is, just like Little Snitch, you will receive a notification prompt whenever an app or service tries to make a connection. Apart from that, you can go deep and monitor what processes are trying to establish a connection with online servers.