I’m not sure why but I always thought LFE was a hobby project for Robert (I mean he already created Erlang!) but after revisiting the site after its redesign it seems people are using it in production:
LFE boasts seamless interoperability with Erlang and the BEAM ecosystem of libraries. It not only has been used in stable production applications since 2015, it has also been employed by start-ups as their differentiating tech. LFE is flexible enough to be everything from your go-to scripting solution to your preferred syntax for massively scalable, soft-real time services.
I’d like to see more threads about LFE