1. Linux → https://github.com/evilsocket/opensnitch
2. Windows → https://www.glasswire.com/
3. Windows (open source) → https://github.com/henrypp/simplewall
4. Windows → https://safing.io/
I've been a long time Litte Snitch user. However, these days I'm just using LuLu: https://objective-see.org/products/lulu.html
I've been a long time Litte Snitch user. However, these days I'm just using LuLu: https://objective-see.org/products/lulu.html