Downloading MacZFS 74.3.3 for Mac from our website was free. This free Mac app was originally created by Dustin Sallings and Alex Blewitt. The program lies within System Tools, more precisely File Managers.
From the developer:
MacZFS is free data storage and protection software for all Mac OS users. It's for people who have Mac OS, who have data, and who really like their data. Whether on a single-drive laptop or on a massive server, it'll store your petabytes with ragingly redundant RAID reliability, and it'll keep the bit-rotted bleeps and bloops out of your iTunes library.
You may want to check out more software for Mac, such as WheresTheFreeSpace, which might be similar to MacZFS.