1. Unfortunately Luminosus is no more maintained, see https://www.luminosus.org2. There is a new version of TouchOSC available, it is not really free for desktop versions (about € 18.- for desktop version € 11.- for iOS or iPadOS) but you can also work directly on a desktop and there are many improvement including LUA scripting support. https://hexler.net/touchosc?fscNext=fsc%3Ainvoke%3Acomplete
3. As an alternative there is a free desktop program called Open Stage Control https://openstagecontrol.ammd.net
Both have version for macOS, Linux and Windows, TouchOSC also for iOS, iPadOS and Android (Google and Amazon)
I am currently looking into ShowCockpit, but i am not to optimistic right now.
Never the less, i am quite ok with Luminosus. Even though it is not in service any more (maybe we can say it has reached its final stadium and don't need any service anymore ; )
Speaking for ShowCockpit...
I have not progressed to far, for now.
It is heavily focused on MA and Onyx Desks for now.
But it is quite open for any other use.
There are some Midi Controllers included already. And maybe in the Future there will be more.
But having a general Midi-Controller and general-OSC Part for free configuration, i am quite happy.
Time will tell how helpfull it will prove to me.
Infos can be found: https://showcockpit.com