Download of LinuxPPC 5.0 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. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. LinuxPPC for Mac relates to System Tools.
From the developer:
LinuxPPC has been an ongoing project to bring this popular Unix operating system to the Power Mac. This installation comes complete with RedHat and BootX installers.