I can't live without these apps. Maybe because I've integrated them very deep into my daily workflow, but they are definitely a huge support.
sindresorhus/quick-look-plugins
Markdown Editor for Mac / Windows / Linux
IPVanish VPN: Online Privacy Made Easy - Fastest, Most Reliable VPN
1.1.1.1 - the Internet's Fastest, Privacy-First DNS Resolver
CleanMyMac X: The Best Mac Cleanup App for macOS. Get a Cleaner Mac in Minutes.