Valent is a new KDE Connect protocol implementation built on GNOME platform libraries. Compared to GSConnect, which is implemented as a GNOME Shell extension, Valent doesn’t need GNOME Shell to run (it’s a standalone app), so it can be used on any GTK-based desktop environment like Xfce, Budgie, Cinnamon, Pantheon, MATE, etc.

Source: LXer – Valent is A KDE Connect Client For GTK-Based Desktops (Cinnamon, Xfce, MATE, Pantheon)