Ask HN: Which good software documentation solution would you suggest?

Hello,

Lately I am looking for a good software for API documentation.

There are a lots of solutions out there and I cannot set up my mind to anyone, neither I have used any software documentation before so I am not experienced in this field.

Any suggestion? Even paid one are okay! Thanks :)!

Sid

p.s. My apologies if there are any english errors as it's not my mother-tongue.