Which (javascript) environments support ECMAscript 5 strict mode? (aka “use strict”)

Question

ECMAScript 5 is in its final draft as I write this; It is due to include a strict mode which will prevent you from assigning to the global object, using eval, and other rest

Answer 1

Now that it's actually released, Firefox 4 is the winner of "first browser to support ES5 Strict Mode." Now you can start using it, as long as you test in Firefox 4.

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Safari 5.1+ and Chrome 13+ Also support strict mode.

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The first One is in: Besen. Implemented in Delphi. I think it's stand-alone, but I'm not sure. But it does support strict mode.

Found via this compatibility table.

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Jurassic claims to support ES5 Strict Mode.