I've noticed that Fopnu and other apps haven't been updated in almost a year. Has development ceased?

Development has NOT ceased.
All 4 programs (Tixati, Fopnu, DarkMX and Super Simple Server) are in full development.
The Devs have been hard at work working towards an Android version of the programs, with a DarkMX release coming very soon.

Thanks for the update.

Big news! Excited to see what comes next!