FibreShare 3.0 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The actual developer of this software for Mac is CharisMac Engineering. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Storage Area Network (SAN) software lets users share common volumes under OS X . The volume management software package allows multiple users to share between OS9 and OSX and have shared read and write access to Fibre Channel storage without the bottlenecks commonly associated with traditional Ethernet-based networking. FibreShare for Mac OS X also sees and allows access to OS 9 volumes.