Downloading Anabi DWGFileViewer 1.3.2 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available. The software lies within Design & Photo Tools, more precisely Viewers & Editors. We recommend checking the downloaded files with any free antivirus. The actual developer of this free software for Mac is yujian.
From the developer:
Anabi DWGFileViewer can view and convert DWG, DXF, DWF and DGN files. The tool allows you to select layouts and views. It supports zoom in, zoom out and zoom extents. It lets you move, rotate and orbit the displayed image. You can customize PDF and DWF settings.
You may want to check out more Mac applications, such as Anabi DWGConverter, which might be related to Anabi DWGFileViewer.