ramBunctious

ramBunctious is a RAM disk program for Macintosh computers using OS X and later. ramBunctious provides basic RAM disk functionality for OS X, including being able to read from and write to RAM disks originally created using ramBunctious 1.x on OS 9 or below.

ramBunctious RAM disks offer substantial performance gains over hard drive access. You can use this program when you want to avoid small, frequent, annoying hard drive accesses.