The 1.1 version of RamDisk for Mac is available as a free download on our website. Our antivirus scan shows that this Mac download is clean. The actual developer of this software for Mac is nu.mine.nuit.
From the developer:
A RAM disk has the advantage that reading and writing data are extremely fast.
You may want to check out more Mac applications, such as Ramdisk Utility, TmpDisk or Make RAM Disk, which might be similar to RamDisk.