finder

2. A small device or part of a camera that helps you see what you are taking a picture of.

She looked through the camera's finder to frame the shot.

3. A person who helps people find things, like a lost item or a place.

The lost-and-found office has a finder who helps return missing things.

4. A program or tool on a computer that helps you look for files.

I used the file finder to search for my homework.