DBVisualizer already runs on Windows/Mac/Linux, connects to more databases, and implements just about every feature you're currently working on, plus all the ones you'll excitedly announce in the next few years -- like exporting data, query parameters, source table editing, charts, result set search, command-line interface, etc.
Your screenshots show so much wasted whitespace... timestamps that line wrap = half as many rows fit on the screen. Tons of unused space in the 'instagram_id' column.
A while back I used DatabaseSpy, which was also much more feature-rich than your tool. https://www.altova.com/databasespy
No relation to either tool, just a customer/user.
I'm having trouble understanding this thought process. Are you saying you'd pick a truly inferior tool that looks good on a Mac to a superior tool that looks inferior because of the UI?
Seriously, I have access to all the fancy features already. I need a tool that will make the usual stuff - table introspection, mostly - easier and more pleasant. If I need to export some stuff, nine times out of ten I'll do it in Python anyway.