TanManager 2.3 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The program belongs to Business Tools. We recommend checking the downloaded files with any free antivirus.
From the developer:
TanManager helps you keep track of your transaction numbers (TANs), used by many online banking services. It saves you the hassle to look up a TAN each time you use an online account, logs each transaction with a date, and copies the next available TAN to the clipboard, ready to paste into your Web browser. Its small screen size minimizes dragging windows around on your desktop.
You may want to check out more Mac applications, such as EuroConverter, CheckTracker or MoneyLine Personal Finance Software for Mac, which might be related to TanManager.