Pitch identification in Linux [closed]

Question

Is there any free software tool or combination that allows me to identify the pitch of a recorded singing session?

The idea is to display some kind of graph with the current pitch in a time line along with markers for the standard notes (C3, C#3, D, etc). I don't need pitch correction and I don't need it to be done in real time, either.

I know that once there was a plugin for Rosegarden that did that, but it has gone missing.

Answer 1

Checkout Audacity. It came out of a project to do musical pitch analysis.