[puredanger]

He also created the Datomic database https://www.datomic.com/

[dragandj]

All right... all right... but apart from better sanitation and medicine and education and irrigation and public health and roads and a freshwater system and baths and public order... what have the Romans done for us?

[foobar_]

brought good syntax ?

[macmac]

And a pretty but impractical number system.

[JBiserkov]

Didn't he also create ClojureScript? https://www.youtube.com/watch?v=tVooR-dF_Ag?t=180

[puredanger]

And edn https://github.com/edn-format/edn

And transit https://github.com/cognitect/transit-format

[puredanger]

And REBL http://rebl.cognitect.com/download.html

[stuarthalloway]

And Fressian https://github.com/Datomic/fressian/wiki

[puredanger]

And core.async, bringing go blocks, channels, and parking semantics to Clojure

https://github.com/clojure/core.async/

[gleenn]

I think REBL is actually more of Stuart Holloway's baby, isn't it? They're close, so maybe this isn't so clear.