Here a dev started creating python-based grin implementation and building a much needed payment processor for grin just some days ago:
End of March this year another dev started working on a Grin ledger hardware wallet:
Another Dev works on Atomic Swaps since Beginning of April this year:
Also - maybe - One-Time Slatepack Addresses will get some love soon, i hope we can figure it out to get things going here:
This is hell of a lot progress for a coin that did perform so badly price-vice. Especially when you compare it to much bigger coins - Litecoin comes to mind here (which latest and only improvement since some years also comes from a grin-dev).
The “being-fair” attribute of Grin is what will keep it afloat. The current projects are proof of it. Lets hope we can get David back on track to do work on the one-time-slatepack thingy. Privacy-vice it sounds really nice.