rules

Here a small collection: - https://github.com/nemonik/Intellect (Dead - 2017) - https://github.com/jruizgit/rules (dead) - https://github.com/cmaclell/py_rete (dead) - https://github.com/nilp0inter/experta (dead) - https://github.com/GNaive/naive-rete (dead) (All of them are rule engine - I guess they implement the Rete algo or some variant but no time to check ATM). Also: "production" is probably false since all of them are dead (or were, last time I checked - I'd be happy to be proven wrong).

Is it possible: yes. Can you write your own home-grown rules engine in Ruby: yes. Can you use off-the-shelf gems: yes. Here's a few I poked around in my previous explorations into Ruby Rules Engines: * durable rules - https://github.com/jruizgit/rules?tab=readme-ov-file#ruby * wongi - https://github.com/ulfurinn/wongi-engine * rules - https://github.com/azach/rules * ruleby - https://github.com/Ruleby/ruleby - bonus: video of original ruleby author explaining rules engines: https://www.youtube.com/watch?v=qMh2RDL6aBM edit: It's also possible to write your own Ruby gem in C so that you can pass the handling of the RHS of your rules to a Ruby script.

Currently https://github.com/nilp0inter/experta but https://github.com/noxdafox/clipspy seems nice, I just shied away from using it due to uneasiness about FFI and debugging, even though the original CLIPS is still awesome and has a very interesting manual. There's also https://github.com/jruizgit/rules but haven't tried it yet.

You’ve got to update your marketing page with some examples besides a small diagram and some java class names. I had to get all the way to mentioning drools before I knew WTF Kogito did. BTW rules[1] is pretty good. [1] https://github.com/jruizgit/rules