LF A usable event engine for high five(H5)

hey everyone.

i am looking for a usable/workable event engine for high five.

I found this https://github.com/AthenaEventEngine/AthenaCore

but have not tried it out yet, though it seems a bit outdated.

are there other event engines that people use?

which are the options?

is some better than another ?

are there also paid event engines? if yes do they share the source ?

thanks for any help in advance