clojure-buzz is concise, idiomatic, and uses a real reactive framework with watched atoms and SSE patches. python-evaleval leans on an external package and an obscure `Three[Selector[…][MORPH][…]]` DSL with eval() on snippets.
python-evaleval at least implements the evaleval idea (signed snippets, morph responses). python-web1 is deliberately minimal Web 1.0 with no JS and no eval — honest and robust, but the least design effort and heavily inline-styled.
clojure-evaleval implements the pattern end-to-end with the best code quality; python-evaleval relies on an external package and a clever-but-obscure DSL.
racket-evaleval is a native, well-commented implementation; python-evaleval is not self-contained.
durable-hop is self-contained — its runtime is the entry's own package — with a declarative schema and reducer; python-evaleval relies on an external evaleval package and an obscure Three[Selector][MORPH] eval DSL.