According to Guru Meditation, the final touches are being added to Directory Opus Magellan, a file management for the Amiga.
The program itself was bought by Guru Meditation in late 2004 and since then they have been porting the product to AmigaOS 4. The website states that they have now passed the greatest hurdles and are on their way to a complete product. A printed CD with a manual is also being prepared for the final release.
If you need a file management program then Directory Opus Magellan might be your best choice. It will be made available for Classical Amiga users and for AmigaOS 4.