Focus - New Tab page that gives you a moment of calm and inspires you to be more productive.
GlassWire - Visualize network activity in detail, get notified when new apps access the network, look out for...
Go Fucking Work - Website blocker so you can get back to your fucking work
Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.
UnDistracted App - Use social media in a useful way. Control Facebook, YouTube, Twitter, Reddit, Netflix and LinkedIn in a responsible way.
Radio Silence - Radio Silence is a network monitor and firewall for the macOS. The software stops apps from making network connections. The firewall runs in the background and does not require an open window.