Sill Cats

Sill Cats is an always-on desktop app where cats wander across your computer screen. They walk along open windows, explore your workspace, curl up to sleep and react to mouse movement. You can click to get their attention: one click catches their eye, two prompts a reaction, and three may get them to play with you.

Cats on your desktop

The cats use the whole desktop as a walking course, including every monitor in a multi-monitor setup. They usually stay out of your way, though they may occasionally bat at the cursor. Their activity shifts with the time of day: they are liveliest at dawn and dusk, lazy around midday, and may sprint around the screen between 1 and 4 a.m.

You can name a cat you like and make it your own. Up to two cats can appear on screen at once, and you can choose to show one instead.

Cats and toys

The first two cats you can adopt are an Abyssinian and a Tuxedo. Additional cat looks and breeds are available through breed packs, and toy packs let you place cat toys on your screen. A free Basic Toy Pack is available.