VALSTAT(tm) #8
Description
I invented VALSTAT mid 2010 : https://github.com/valstat
there is also P2192 (C++) paper on it. Latest is P2192R1 .
It is very light and it is a call/response protocol for "anything". It does not need any library code just very few mandates to be respected when implemented ad-hoc in various languages.
I have done C/C++/C# code around it.