Download of yubiswitch 0.12 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free Mac app is a product of Angelo Failla. The size of the latest downloadable setup file is 1.3 MB. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The program is included in System Tools.
From the developer:
Yubiswitch is an OSX status bar application to enable/disable a Yubikey Nano or Neo from Yubico. Yubiswitch now locks your computer when you remove the device from the USB port. This status bar app allows you to avoid sending accidental OTP passwords by allowing you to enable or disable the Yubikey using a convenient global keyboard hot key that you can configure yourself.
You may want to check out more Mac applications, such as Portable Nvu or Matchprint Virtual, which might be related to yubiswitch.