xbgtk - an xbase/Harbour/xHarbour object-oriented wrapper for using the GTK+ GUI. This project has been deprecated in favour of https://github.com/tuffnatty/hbgi, an approach that uses GObject Introspection for automatic bindings.
Gemini is a suite that includes a command-line tool and a GUI to synchronize data between two or more folders. It will also include a Daemon for automatic syncs and some advanced Sync Functionalities.