PandoCalendar 7.0.8 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 application is categorized as Productivity Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This free Mac application is a product of Panda Systems.
From the developer:
This useful Mac-only program places a fully functional calendar on your desktop.
The look is completely customizable. You can change the calendar's font, size, and the colors used to draw the calendar; the background can be entirely transparent, so you can still see your desktop picture; you can center the current week (so you are always able to look back and ahead a full month at a time).
You may want to check out more Mac applications, such as VoodooPad 5, PersonalBrain or Freeplane, which might be similar to PandoCalendar.