As3Eval is a library that packages the Tamarin ESC compiler to work within a run-of-the-mill flash player. It also includes a port of an early version of ESC to as3. That port is not currently maintained and is there primarily for historical purposes. The folks at the Tamarin project have put in quite a bit of work on ESC. At this stage, most ecmascript 3 stuff is working, and a lot of actionscrip