Hi,
I'm not sure if this is appropriate for this forum, but I thought that perhaps some of you here might be interested in checking out modus_ponens [1],
a rust library to build forward chaining inference engines.
It is still in its nfancy, but it shows promise. In the linked README I provide some benchmarks comparing its performance with that of CLIPS.
1.- https://git.sr.ht/~enriquepablo/modus_ponens/tree/mirrors/README.md