Comment by simonw

None of those v8 solutions provide what I need:

1. The ability to restrict the amount of memory that the sandboxed code can use

2. The ability to set a reliable time limit on execution after which the code will be terminated

My third requirement is that a company with real money on the line and a professional security team is actively maintaining the library. I don't want to be the first person to find out about any exploits!