You could have downloaded OnePile 2.3 for Mac from our application library for free. The software lies within System Tools, more precisely File Managers. The actual developer of this free Mac application is Dirk Holtwick.
From the developer:
OnePile is a safe place for your ideas and documents. The built-in rich text editing is the perfect place for noting down your ideas and structure your memories. Respecting your privacy is one of the major principles of OnePile. Therefore, the data is not stored on a proprietary cloud service but on your local device.
You may want to check out more Mac applications, such as NotLight, Dock Changer or iLinkPod, which might be related to OnePile.