Short, practical answers for the things macOS makes hard to see.
What is using port 3000?
What process is using this file?
What display configuration am I actually running?
What is connected, and at what speed?
Why isn't my Mac sleeping?
What is my MacBook battery actually doing?
Is my network connection actually healthy?
What exactly is this process?
Which app is using my disk right now?
What environment variables does this environment see?
Which DNS servers is my Mac using, and do they respond?
MacPeek Remote