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Re:Rubinius Announces Plans for GIL Elimination, JIT Improve... by kingkilr on Thursday February 17, 2011 @03:06PM (#2232587)
Both Jython and IronPython. PyPy probably will in the future, however its not a goal at the moment.
Re:Rubinius Announces Plans for GIL Elimination, JIT Improve... by tmorgan on Thursday February 17, 2011 @07:38PM (#2233619)
pypy also supports stackless style microthreads: http://codespeak.net/pypy/dist/pypy/doc/stackless.html but, yes, system level threads are GIL based.