I'd add that node.js is even a good enough tool for heavy computation. Do not crunch the numbers in the main event loop, but spawn a worker-cluster and you're f

I'd add that node.js is even a good enough tool for heavy computation. Do not crunch the numbers in the main event loop, but spawn a worker-cluster and you're fine. Do not forget that the raw speed of the V8 (not to mention C++ modules for more speedup) outperforms other current scripting languages like ruby.