xfdashboard is described as 'provides a GNOME shell dashboard like interface for use with the Xfce desktop'. There are six alternatives to xfdashboard for a variety of platforms, including Linux, BSD, Windows, Ubuntu and Deepin. The best alternative is GNOME, which is both free and Open Source. Other great apps like xfdashboard are Compiz (Free, Open Source), Window Maker (Free, Open Source), GNUstep (Free, Open Source) and DDE (Free, Open Source).
Window Maker has a reputation for being fast, efficient and highly stable. Window Maker has been characterized as reproducing "the elegant look and feel of the NeXTstep GUI" and is noted as "easy to configure and easy to use.