[1337p337]

Stock Scheme does not have much in the way of interfaces to the outside world (long story) but there are several Scheme variants where people are doing larger projects. Racket is sort of a Scheme variant, and it seems to be the most popular, but Chicken and Guile are also pretty popular (as far as Scheme variants go) for real-world use cases.

[_delirium]

Gambit is another one that has some real-world usage (it's what LambdaNative uses).

[1337p337]

Yep, that's why I left it off the list.

I've actually written some LambdaNative. Unfortunately, we ended up going with Cordova, but you can guess which one was more fun to write.