Alice is an open source programming language created in 2000.
|#678on PLDB||23Years Old|
Try now: TIO
Alice ML is a programming language designed by the Programming Systems Laboratory at Saarland University, Saarbrücken, Germany. It is a dialect of Standard ML, augmented with support for lazy evaluation, concurrency (multithreading and distributed computing via remote procedure calls) and constraint programming.. Read more on Wikipedia...
fun fib 0 = 0 | fib 1 = 1 | fib n = spawn fib(n-1) + fib(n-2);