Download of OTPKEY 2.3 for Mac was on 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 an intellectual property of Certchip Corp. 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. OTPKEY for Mac belongs to Security Tools.
From the developer:
OTPKEY adds a multi-factor layer of security to your online accounts. Many services and IT products support One Time Password authentication to protect your account. These passwords can be generated even when your device is in offline mode. OTPKEY works with many of the great online services you already use, including Google, Facebook, Evernote, GitHub, Twitter, AWS, and many more.
You may want to check out more software for Mac, such as Password Manager or Tiptoe, which might be related to OTPKEY.