A great OpenSource cross-platform SGI-based STL - see http://www.stlport.org/doc/platforms.html for its range. Yes, Virginia, you can WriteOnceCompileAnywhere in C++ ...

''Does it work?''

BloodyOath! Check out the exhaustive regression tests that come with it if you don't believe me.
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See StandardTemplateLibrary
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CategoryCpp

The last post on this page was in 2000. Is it still active? If the author is a geeky, introvert buried alive under piles of Dominoe's, Buds and network cabling, let him please take note that the year is now 2006.