TmpDisk

TmpDisk provides a macOS status‑bar utility for creating and managing RAM disks—virtual drives that reside in system memory. Users can define a disk’s size, name, and filesystem, then mount it for fast, temporary storage that disappears when the disk is ejected or the computer shuts down. The tool also offers a command‑line interface that works independently of the GUI, allowing scripts or terminal‑oriented workflows to create and control RAM disks.

A distinctive feature is folder synchronization, where a source directory’s contents are copied onto a newly created RAM disk and later saved back either manually, on a timed interval, or when the disk is ejected. This enables high‑speed editing of large files such as photos or archives while preserving changes without permanent storage. Additional options include auto‑eject on application quit, Spotlight indexing, and various mount flags for hidden or no‑exec volumes.

TmpDisk targets macOS users who need temporary, high‑performance storage for tasks like extracting archives, handling large media files, or managing transient logs. It supports macOS 10.13 and later, and has been maintained as a stable, open‑source project for over a decade.