[mkskm]

AdGuard for Mac is the same offering (not to be confused with AdGuard for Safari, which is a browser extension):

https://adguard.com/en/adguard-mac/overview.html

There's also Little Snitch Mini:

https://www.obdev.at/products/littlesnitch-mini/index.html

[mrAssHat]

This snitch is proprietary crapware. Instead, use OpenSnitch when on Linux and LuLu Firewall when on Mac.

[mkskm]

It's proprietary but quality software. LuLu is cool but doesn't offer the same functionality.

[satvikpendem]

Any differences in performance or how well each works for adblocking compared to the others?