OTP Auth 1.0 for Mac can be downloaded from our website for free. The software is included in Security Tools. This free Mac app is an intellectual property of Roland Moers.
From the developer:
OTP Auth is an application for calculating one-time passwords to be used with the two-factor authentication of Dropbox, Facebook, GitHub, Google Mail, and many more. Therefore, using this tool you can make your accounts safe again. Furthermore, the app does not connect to the Internet. It will not upload your accounts to someone else.
You may want to check out more software for Mac, such as SecureAuth OTP, OTP Manager or Templates for iBooks Author Free, which might be similar to OTP Auth.