Currently:

Atari 800XL on the upstairs plasma screen.

Atari 1040STe on the kitchen table.

Amiga 500 downstairs.

Amiga 4000 also up and running downstairs.

Tandy 1000 in the little retro room.

Color Computer 3 - also in retro room.

TI-99/4A - retro room.

VIC-20 - ditto

Color Computer 2 - downstairs TV room.

Atari 400 - also in downstairs TV room.

Apple IIe - sitting next to my laptop PC.