Our website provided a free download of MacBoot 1.0 for Mac. The application belongs to System Tools. This free Mac app was originally created by Infinity-to-the-Power-of-Infinity.
From the developer:
MacBoot is an application for changing the gray apple shown during system startup to any image or icon. It is also possible to change the background. The program can use boot images created by others and made available from sites such as ResExcellence, but it is also very simple to create your own using drag and drop.
You may want to check out more software for Mac, such as InsomniaT or IBM Performance Analysis Suite, which might be related to MacBoot.