+1 for EDN. In terms of new formats, I'm quite fond of RON, it hits a similar sweetspot in flexibility. JSON5 is nice too, mostly because it's popular. IMO Jso

+1 for EDN. In terms of new formats, I'm quite fond of RON, it hits a similar sweetspot in flexibility. JSON5 is nice too, mostly because it's popular. IMO Jsonnet, CUE, etc are just in a different category of complexity since they include code and require a full-blown interpreter to read.