Caret
Caret's idea is that the AI should come to where you type rather than making you visit a chat window, and one keystroke in any Mac app is about as low-friction as that gets. Storing memory locally is the right default for something this invasive. But the mechanism is continuous screen reading, it demands macOS 26 or newer, and free at launch from a v1 startup is a price that has nowhere to go but up.
Pros
- Works across dozens of apps rather than inside one editor
- Single Tab keystroke — no palette, no window switch
- Memory is stored locally on the Mac and improves with use
- Free at launch with no card required
Cons
- macOS 26 or newer only, which excludes most machines today
- Requires continuous screen-reading permission to function at all
- Free at launch is not a committed price for a v1 product
- No API, no team features, no cross-device sync mentioned