Been using Syncthing-Gtk and it has not received any updates in a few years. Is there any other Syncthing clients for Linux that is maintained like Syncthing-Gtk that comes with a tray icon to interact with Syncthing?
If you use GNOME Shell, there are extensions to add a Syncthing tray icon. Using it all the time, works flawlessly. However it expects to manage the daemon as a systemd user service.
I don’t know of any other truly cross-platform GUI wrappers like Syncthing-GTK was.
Generally many tools related to syncthing can be found here: Community Contributions — Syncthing documentation