There was a download of npTray 1.0 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. This program was originally produced by David Esperalta. The software lies within System Utilities, more precisely Plugins Addons. The most popular version among npTray users is 1.0.
From the developer:
You plug-in allows you to add one or more Tray Icons for your NeoBook publications. You can create more than one Icon Tray Icon from the same publication. Each Icon can be controlled separately and have menus and sub-menus, "balloon hints", etc.
You may want to check out more software, such as Philips Product Selector plug-in for DIALux, Events notification plugin or Paste As Visual Studio Code, which might be related to npTray.