OnePile 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 actual developer of this free Mac application is Dirk Holtwick. We recommend checking the downloaded files with any free antivirus. OnePile for Mac belongs to System Tools.
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.