Download of PiFinder 1.1.1 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. We recommend checking the downloaded files with any free antivirus. This free Mac application was originally produced by Ivan X. PiFinder for Mac is categorized as Internet & Network Tools.
From the developer:
If you've just booted up your Raspberry Pi, but don't have it connected to a screen and keyboard, you probably want to log in from a Terminal window, but don't know its IP address. Pi Finder figures it out for you, and makes it easy to connect.
You may want to check out more Mac applications, such as AquaEthereal or tn3270, which might be related to PiFinder.