Gregory's Server
Let me introduce you to one of my favourite #esolang.
Thue is a matrioshka esoteric computer based on string rewriting rules.
A Thue program consists of two parts: a list of substitution rules, which is terminated with a line having both sides of the operator empty, followed by a string representing the initial program state, which may extend over multiple lines.
@neauoire
I liked dna one ;p