Best AI tool you adopted this year that you didn't expect to love?

The AI tooling space moves fast and a lot of it is hype. So let's focus on the opposite: a tool you actually adopted this year that earned its place in your workflow.

• What is it, and what does it replace or add?
• What convinced you it was worth keeping?
• Any caveats for someone considering it?

Bonus points for the unglamorous tools that quietly save you hours.