The 1.4.1 version of ReiKey for Mac is provided as a free download on our software library. ReiKey for Mac belongs to Security Tools. This Mac download was scanned by our built-in antivirus and was rated as safe. The latest setup file that can be downloaded is 9.2 MB in size. This free software for Mac OS X was originally designed by objective-see llc.
From the developer:
ReiKey is an application that can scan and detect persistent keyboard "event taps" meant to intercept your keystrokes. ReiKey was designed to detect such keyboard taps, alerting you any time a new tap is installed. In other words, its goal is generically to detect (the most common type of) macOS keyloggers.
You may want to check out more Mac applications, such as Ettercap, SecuriSSH or VirtualDiskUtility, which might be related to ReiKey.